8. Internationales
8. Internationales
Boosting Digital Sovereignty
Wie kann ein offenes Webdaten-Ökosystem zur digitalen Vielfalt beitragen?
Nicht nur Europa ist stark von den Webdiensten einiger weniger monopolistischer Wirtschaftsakteure abhängig. Daten fließen ab, Werte gehen verloren und gesetzliche Regulierung wird untergraben. Wie können wir dieser Situation mit einer offenen Webdateninfrastruktur begegnen? Welche technischen und wirtschaftlichen Konzepte versprechen Akzeptanz und stärken die digitale Vielfalt? Welche ethischen und rechtlichen Fragen müssen in diesem Zusammenhang beantwortet werden?
„Boosting Digital Sovereignty” ist das Thema des ossym2026. Besuchen Sie uns in Berlin und erleben Sie inspirierende Vorträge, tiefgründige Diskussionen und die neuesten wissenschaftlichen Forschungsergebnisse.
Zum achten Mal bringt ossym2026 die europäische und internationale Open-Web-Search-Community zusammen.
Da es sich um eine englisch-sprachige Veranstaltung handelt, werden alle weiteren Informationen in Englisch bereitgestellt.
Über die Konferenz
Die hybride Konferenz bietet ein Forum, um Ideen und Konzepte der offenen Internetsuche und verwandte Themen wie Webdaten im Kontext von KI zu diskutieren und weiterzuentwickeln. Die Konferenz umfasst verschiedene Formate – darunter wissenschaftliche Vorträge, Postersessions, Podiumsdiskussionen, Workshops, Vorführungen, studentisches Engagement und Diskussionsräume. Sie richtet sich an Forscher, Datenzentren, Bibliotheken, politische Entscheidungsträger, Rechts- und Ethik-Experten sowie die breitere Öffentlichkeit.
Das ossym2026 – mit freundlicher Unterstützung von:

Conference Information & Programme
Discuss interdisciplinary aspects of Open Search
technical • ethical • legal • educational • economic • applications
Keynotes
Stéphane Beemelmans
Deputy Chair of the Executive Board of the German Aerospace Center (DLR)
Peter Gehle
CIO, German Aerospace Center (DLR)
Julian Kunkel
Professor in High-Performance Computing at University of Göttingen
Stefan Mesken
Chief Scientist, DeepL
Hannes Taubenböck
Head of department „Georisks and Civil Security“ at the Earth Observation Center (EOC) of the German Aerospace Center (DLR)
Professor at the University Würzburg holding the chair “Global Urbanization and Remote Sensing”
Aline Blankertz
Cofounder, Structural Integrity
Further keynote speakers tba
Science Tracks
Crawling
Retrieval
Spatial modeling
AI in Science
Web data driven applications
Sessions
- Ethics + Society
- Legal aspects of open web search & AI training
- User behavior and preferences in search and AI
Workshops
- Evaluating Design Patterns for Legally Compliant Open Web Index and Search Engine Systems
- Disinformation tools
- Open Web Data Working Group of EuroHPC
- Student project session
Overview timetable
Day 1 | 7 Oct. 26
08:30 | Opening of Registration
09:15 | Conference Opening
Welcome
Peter Ruppel, Fabian Geier
CODE University of Applied Sciences
09:30 | Keynote
Opening Address
Peter Gehle
CIO, German Aerospace Center (DLR)
09:45 | Keynote
Opening Keynote
tba
tba
10:30 | Coffee Break
11:00 | Science Track
Retrieval
Session Chair: tbd
11:00 OURS & YOARS: Open Platforms for Sovereign Web Retrieval and Agentic Information Access
Michael Granitzer; Mohammed Al-Maamari; Laura Caspari; Michael Dinzinger; Kanishka Ghosh Dastidar; Dang Dang Hai Dong; Jelena Mitrovic; Saber Zerhoudi (University of Passau); David Ciz (IT4Innovations)
11:20 Adaptive Unsupervised Topic Modeling for Domain Focused Web Search
Hema Pandey (DLR)
11:40 An Open-Source Retrieval Layer for Institutional RAG: From Authenticated Crawl to Searchable Index
Noor Afshan Fathima; Juan Manuel Guijarro, Andreas Wagner (CERN); Alexander Nussbaumer (Graz University of Technology)
12:00 | Lunch Break (self-hosted)
13:30 | Keynote
Sovereign AI Services Leading to a European Future of Search
Julian Kunkel
Professor for High-Performance Computing at University of Göttingen
14:15 | Social science session
User behavior and preferences in search and AI
Session Chair: tbd
14:15 Privacy-Enhancing Digital Infrastructures – Understanding User Preferences Regarding Internet Search And Their Inclusion Into Systems Design
Sarah Götz (University of Kassel)
14:35 Hybrid Search Ecosystems: An Empirical Analysis of Online Search Behavior of Generation Z and Alpha in Germany
Alexander Decker; Marie Einsiedler (Technische Hochschule Ingolstadt, Germany)
14:55 Renegotiating the open web: Emerging AI Preferences standards
Stefan Baack (Independent researcher)
15:15 | Coffee Break
15:45 | Applications Track
Web data driven applications
Session Chair: tbd
15:45 eMarketShield: Enhancing Consumer Protection in E-Commerce through Digital Innovation and Regulatory Oversight
Christoph Rinner (Austrian Agency for Health and Food Safety)
16:05 SOURCE (title tba)
tba
16:25 Designing A Power Bi Dashboard For Data-Driven Supplier Comparison In Manufacturing Procurement
Beulah Devathasan; Emolin Indran Rajanbabu (Aarhus University)
16:45 | Closing of Day 1
18:00 | Ice-breaker and buffet-dinner, with welcome address by DLR Board member Stéphane Beemelmans
Day 2 | 8 Oct. 26
9:00 | Keynote
Keynote (title tba)
Stefan Mesken
Chief Scientist, DeepL
09:45 | Coffee Break
10:15 | Legal Session
Legal aspects of Open Web Search and AI training
Session chair: tbd
10:15 Design Conflicts in Open Search Infrastructures: A Design Pattern-Based Approach to Integrating Legal and User Requirements
Sophia Meywirth, Paul Johannes, Christian Geminn, Matthias Söllner (University of Kassel); Charlotte Werther, Stefan Voigt (OSF)
10:35 Quo Vadis Digital Regulation? An Overview of the Digital Regulatory Landscape in Europe and what it means for the European Web Data Infrastructure
Charlotte Werther (OSF)
10:55 Data protection responsibility of online platforms for user-generated content – recognising sensitive data, preventing scraping and identifying users in light of the ECJ’s ‘Russmedia’ judgement
Paul Johannes (University of Kassel)
11:15 Public Digital Infrastructure As Regulatory Stabilizer In A Recalibrated AI Landscape: Strategic Legal Navigation Under The EU Digital Omnibus On AI
Kai Erenli (FH BFI Vienna)
11:35 | Lunch Break (self-hosted)
13:00 | Keynote
The Pulse of the Planet: Remote Sensing and geoweb data redrawing the map of human behavior
Hannes Taubenböck
Head of department „Georisks and Civil Security“ at the Earth Observation Center (EOC) of the German Aerospace Center (DLR)
Professor at the University Würzburg holding the chair “Global Urbanization and Remote Sensing”
13:45 | Science track
Spatial modeling
Session chair: tbd
13:45 Extraction Of Geospatial Disaster Related Information From Web News And Text Data
Vanessa Rittlinger (DLR)
14:05 Proposed Methodology for Open Search Infrastructure leveraging federated RAG-systems and open source Speech Intelligence for cross-domain collaboration featuring Disaster Management, Traffic Flow Prediction and Literature Studies
Prof. Dr. Engelbert Niehaus, Jonah Schuster, Maximilian Stoffel, Walter Kühn, Jörg Rapp (RPTU University Kaiserslautern-Landau)
14:25 A Spatially Enabled Search System For Hydrological Publications: A Demonstration
Xuke Hu; Jens Kersten; Friederike Klan (DLR); Lina Stein (RPTU University Kaiserslautern-Landau)
14:45 | Coffee Break
15:15 | Parallel workshops
Workshop 1: Evaluating Design Patterns for Legally Compliant Open Web Index and Search Engine Systems
Organisers: Sophia Meywirth, Paul Johannes (University of Kassel); Charlotte Werther (OSF)
Workshop 2: SOURCE workshop
Organisers: tba
Workshop 3: Joint session of Open Web Data Working Group of EuroHPC and Open Web Search Community
Organisers: Megi Sharikadze (LRZ); Heidi Laine, Per Öster (CSC)
Workshop 4: Student project session / Index access tutorial (tbd)
Organisers: CODE (tbd)
16:45 | Closing of Day 2
19:00 | Side event: panel discussion (in German) & networking dinner
„Souveränität im Netz – Wie eine europäische Webdateninfrastruktur Freiheit, Wirtschaft und Demokratie stärkt“
Weizenbaum-Institut, Hardenbergstraße 32, 10623 Berlin
This side event is organized by the PriDI Project – www.pridi-projekt.de
Day 3 | 9 Oct. 26
9:00 | Keynote
Sovereignty for whom? The politics of breaking with dependencies in search
Aline Blankertz
Structural Integrity
9:45 | Social science session
Ethics+Society
Session chair: tbd
9:45 An Ethics-by-Design Approach for the Open Web Index
Alexander Nussbaumer (TU Graz)
10:05 Co-Creating Inclusive AI Search Frontends: Findings from the KIsu-Project with children, young people, and older adults
Melanie Platz; Kristin Altmeyer; Stephanie Heel; Sarah Malone; Kerstin Reese; Lisa Schick; Verena Wolf (Saarland University); Tanja Gottsmann; Maria Wiesner (fragFINN e.V.); Julius Gabelmann (DFKI); Ursula Gmelch; Christine Plote (OSF); Alessandra Rodrigues Eismann (Centigrade GmbH)
10:25 Open, to What End? A Capability-Theoretic Perspective on Open Search
Nicola Neophytou; Bhaskar Mitra (Independent Researcher)
10:45 | Coffee break
11:15 | Applications track
AI in Science
Session Chair: tbd
11:15 AI-Assisted Search String Creation Module for NeutrinoReview
Luca Fontana; Christian Gütl (Graz University of Technology); Andre Henriques (CERN); Igor Jakovljevic (CERN); Sebastian Pack; Elias Sandner (Graz University of Technology (AT)); Alice Simniceanu (WHO); Andreas Wagner (CERN)
11:35 TraceableAI: An Open-Source Agentic Framework For Prisma-Compliant Literature Synthesis
Philip Lau (Aarhus University)
11:55 NeutrinoReview: Usability Analysis
Luca Fontana, Christian Gütl, Elias Sandner (Graz University of Technology); Andre Henriques, Igor Jakovljevic, Andreas Wagner (CERN); Sebastian Pack; Alice Simniceanu (WHO)
12:15 | Science Track
Crawling
Session Chair: tbd
12:15 Estimating Absolute Web Crawl Coverage From Longitudinal Set Intersections
Michael Paris (Humboldt Universität zu Berlin); Fabian Baumann (University of Pennsylvania); Grigori Paris (Independent Researcher)
12:35 A Focused Crawling Strategy to Enhance Geoscience Data Retrieval
Tobias Hecking (DLR), Raphael Frühwirth; Christian Gütl; Alexander Nussbaumer (TU Graz)
12:55 Measuring Crawler Lock-in: Translating Scheduling Preferences Into Language Coverage For Common Crawl
Michael Paris (Humboldt Universität zu Berlin); Sebastian Nagel (Common Crawl Foundation)
13:15 | Closing of #ossym2026 & Wrap-Up & announcing #ossym2027
13:30 | End of Symposium
13:30 | Lunch (self-hosted)
For any changes in the program please check back regularly on the conference website. Or sign-up for our newsletter to stay up to date.
Speaker Info
Stéphane Beemelmans
Deputy Chair of the Executive Board, German Aerospace Center (DLR)
8 October | Welcome address at the ice-breaker | 18:00
Stéphane Beemelmans was born in Toulouse, France, in 1965. He studied law in Bonn, Germany, with an interruption for military service as a reserve officer in the French Army. After completing his legal traineeship at the Higher Regional Court in Cologne, he began his career in 1994 as a European affairs officer in what is now the Saxon State Ministry for Social Affairs, Health and Social Cohesion in Dresden. He subsequently held various positions, including in the State Representation of the Free State of Saxony in Bonn, the State Chancellery as personal adviser to the Head of the State Chancellery, and the Federal Ministry of Finance where he served both as Head of the department for the State Parliament and Cabinet and as press spokesperson. In 2003, he was appointed Managing Director of the State Palaces, Castles and Gardens of Saxony.
After a brief stint as Head of the Executive Office in the Saxon Ministry of the Interior, Stéphane was appointed Head of Office for the Chief of the Federal Chancellery in October 2005. In 2009, he moved to the Federal Ministry of the Interior, initially heading the executive staff before being appointed Head of the Department for Fundamental Issues, EU and International Affairs, and New Federal States in early 2010. In March 2011, he was appointed State Secretary in the Federal Ministry of Defence, where he was responsible for administration, armaments and infrastructure. He later served as Managing Director of EUTOP Berlin GmbH (2014 to 2016) and PD – Berater der öffentlichen Hand GmbH (2016 to 2024). Prior to his appointment to the DLR Executive Board on 1 April 2026, Stéphane worked as an independent consultant and lawyer.
Prof. Dr. Julian Kunkel
Professor of High-Performance Computing (HPC) at the University of Göttingen
Deputy Head of High-Performance Computing at the Göttingen Supercomputing Center (GWDG)
7 October | Keynote – Sovereign AI Services Leading to a European Future of Search | 13:30
Prof. Dr. Julian Kunkel is a leading expert in HPC storage systems, performance analysis, and the software engineering of scientific applications. Prof. Kunkel’s academic journey began with a deep interest in high-performance computing storage, which he developed during his studies in computer science in 2003. Prior to his current position, he held postdoctoral research roles at the German Climate Computing Center (DKRZ), where he worked closely with the Scientific Computing group at the University of Hamburg. He also served as a lecturer at the University of Reading. At the University of Göttingen, Prof. Kunkel manages several research projects focused on advancing HPC technologies. His primary research goals include developing efficient and performance-portable I/O systems, optimizing data reduction techniques, and improving the management and performance analysis of parallel applications and cluster systems. He also leads the german AI service center „KISSKI“ (AI service center for critical infrastructures), providing basic AI services to over 500 german institutions and over 1 Mio users as well as providing AI resources to startups, SMEs and the public sector. Prof. Kunkel is a founding member of the IO500 benchmarking effort, the Virtual Institute for I/O (VI4IO), and the HPC Certification Forum.
Prof. Dr. Hannes Taubenböck
Head of department „Georisks and Civil Security“ at the Earth Observation Center (EOC) of the German Aerospace Center (DLR)
Professor at the University Würzburg holding the chair “Global Urbanization and Remote Sensing”
8 October | Keynote – The Pulse of the Planet: Remote Sensing and geoweb data redrawing the map of human behavior | 13:00
Prof. Dr. Hannes Taubenböck is heading the department “Georisks and Civil Security” at the Earth Observation Center (EOC) of the German Aerospace Center (DLR), Weßling, Germany. He also holds the chair “Global Urbanization and Remote Sensing” at the Julius Maximilian’s University of Würzburg, Germany. His research focuses on urban remote sensing topics, from the development of algorithms for information extraction from multi-modal remote sensing data to value adding to classification products for findings in urban geography. Over the past few years he has also focused increasingly on the integration of spatial remote sensing data and web data in the fields of urbanization, migration, (geo-)risks and civil security. He is also a co-founder of the „Geolingual Studies“ team at the University of Würzburg.
Aline Blankertz
Co-founder, Structural Integrity
9 October | Keynote – Sovereignty for whom? The politics of breaking with dependencies in search | 9:00
Aline Blankertz is an applied economist and cofounder of the digital policy collective Structural Integrity. Her work focuses on competition policy, digital market analysis and transforming platforms to serve the public interest. She has worked at various NGOs, including Rebalance Now and Wikimedia Deutschland, after spending various years in economic consulting.
Registration
Venue
CODE University of Applied Sciences
Berlin-Neukölln, Germany
Address
CODE University of Applied Sciences
Donaustr. 44
12043 Berlin
Access instructions for event guests
- Enter the venue via Donaustraße 44, not via Karl-Marx-Straße.
- Once inside the building, take the elevators from the ground floor to the first floor, where the venue is located.
- The building entrance and access route are wheelchair accessible.
Please note: Berlin City Tax
The City of Berlin charges a tax for the promotion and advancement of culture of 5% for each night a guest spends privately at a hotel. Overnight stays for professional/business reasons are exempt from the City Tax. Additional charges such as breakfast and mini-bar are tax-free.
Hotels nearby
Mercure Hotel Berlin Tempelhof (€€€)
Motel Plus Berlin Neukölln (€)
Bellman Hotel (€€€)
ibis Berlin City Süd (€€)
Hotels in the city centre with good connections
Motel One Berlin-Alexanderplatz (€€)
Maritim proArte Hotel Berlin (€€€)
Hotel Courtyard by Marriott Berlin City Center (€€€)
Hotels in Berlin West near Kurfürstendamm
Leonardo Hotel Berlin KU´DAMM (€€)
How to get there
Airport to city centre
- The Airport Express takes you to Berlin Central Station in 30 minutes.
- Two new lines under the name PlusBus Airport-Region also run every hour during the week from Königs Wusterhausen via Wildau, Miersdorf and Schulzendorf to BER Airport. Express buses also run from the Rudow underground station.
- To reach the city centre, take the S-Bahn lines S 9 and S 45, which leave every 20 minutes.
- Then please follow the instructions in the next section „Public transport“.
By public transport
Take the U7 subway and get off at Karl-Marx-Straße. From there, it’s a 5- to 10-minute walk to CODE.
If you arrive at Berlin Central Station, the easiest and quickest option is to take the M41 bus (direction: Sonnenallee/Baumschulenstr.) and get off at Berlin, Erkstraße. From there, it’s just a 5-minute walk.
Berlin uses a zone system. Please find info on fares, timetables and the zones in Berlin’s public transport area.
By car
Take the A100 to the Sonnenallee exit. From there, you only have to drive straight for around 1.5 km until you reach CODE.
Parking spots can be hard to come by, though. If you want to make sure you can park your car, there are a few public car parks in the area you could try: one is on Rollbergstraße, about a 7-minute walk from CODE, and another one is at Neukölln Arcaden, about a 10-minute walk from CODE.
Please note that downtown Berlin is an environmental zone. This means you need to get your vehicle a sticker indicating its emissions rating.
By taxi
Make sure your drop-off point is Donaustraße 44, not via Karl-Marx-Straße.
Conference Facts – Overview
Important Dates
Submission deadline of full papers and extended abstracts
15 March 2026
Information about contribution acceptance
1 June 2026
Registration for the #ossym2026
open since 15 June 2026
International Open Search Symposium #ossym2026
7-9 October 2026
Online publication of proceedings
October 2026
Main Topics
Discuss interdisciplinary aspects of Open Search
technical • ethical • legal • educational • economic • applications
Topics of #ossym2026 include but are not limited to
- Open search architectures and platforms
- Open Web Index and application domains
- Federated search and cross-domain search
- Web Data Analytics and Web Mining
- Natural language and multi-media processing for search
- Large Language Models, Machine learning and generative AI
- AI-based search and Retrieval Augmented Generation
- Personalization and recommendation in search
- Conversational Retrieval Experiences
- Georeferencing of web content and geospatial search and analysis
- Evaluation of open search systems
- Applications of open search in domains such as science, e-commerce, health, and education
- Search bias and trust
- Economic dimensions of open search
- Search engine advertising and business models in an open search world
- Green computing and sustainability
- Societal and ethical challenges and solutions
- Ethical and value aspects of search
- Politics and governance
- Legal aspects
Call for papers – closed
We are calling for your contribution with scientific papers, sharing of practical experiences or by introducing concepts and positions in relevant fields, such as computer science, legal, economics and ethics. Full papers and abstracts presented at the #ossym2026 will be published open access in online proceedings (including DOIs and ISBN) following the event.
Please submit your contribution: for research contributions we accept full papers (4-6 pages) and for any other contribution (concepts, best practices or practitioners’ experiences) an extended abstract (1 page).
All abstracts and papers have to be submitted via https://indico.cern.ch/e/OSSYM-2026 using the templates specified there. The acceptance of all full papers and extended abstracts is subject of a peer-review process.
Call for Demos
We invite young researchers and students to showcase their innovative work using the Open Web Index of the OpenWebSearch.eu project. This call is an excellent opportunity for participants to develop and present innovative search and web analytics solutions to advance to a more open search ecosystem and show them to the open search community. We are particularly interested in demonstrations that combine the Open Web Index with technologies such as Large Language Models, Knowledge Graphs, or that offer new search paradigms (e.g. Argumentation Search, Conversational Search), interesting frontends, and domain-specific search solutions. In addition, we are also looking for contributions towards web-scale, robust semantic enrichment techniques that can advance search solutions for different domains. Examples could be information quality assessments, entity extraction or Knowledge Graph alignment.
All demos have to be submitted via https://indico.cern.ch/e/OSSYM-2026 using the templates specified there. The acceptance of all demos is subject of a peer-review process.
Organisers & Programme Committee
Conference Chairs
Prof. Dr. Michael Granitzer | University Passau, Germany
Prof. Dr. Christian Guetl | Graz University of Technology, Austria
Dr. Megi Sharikadze | Leibniz Supercomputing Centre, Munich, Germany
Dr. Stefan Voigt | Open Search Foundation, Starnberg, Germany
Dr. Andreas Wagner | CERN, Geneva, Switzerland
Local Chairs and Organization
Dr. Stefan Voigt | DLR, Cologne, Germany
Publication Chairs
Sebastian Guertl | Graz University of Technology, Austria
Elias Sandner | CERN, Geneva, Switzerland
Dr. Andreas Wagner | CERN, Geneva, Switzerland
Programme Committee
Prof. Emmanuel Cartier | European Commission JRC
Prof. Dr. Alexander Decker | Technische Hochschule Ingolstadt, Germany
Prof. Dr. Arjen P. de Vries | Radboud University, Netherlands
Prof. Dr. Stefan Dietze | Heinrich Heine University Düsseldorf and GESIS, Germany
Msc. Roxanne ElBaff | German Aerospace Centre (DLR), Germany
Prof. Dr. Kai Erenli | University of Applied Sciences BFI Vienna, Austria
Dipl. Inf. Fabio Fracassi | Code.Berlin University of Applied Sciences, Berlin, Germany
Diana Francisco de Sousa | Joint Research Centre (JRC), Ispra, Italy
Dr. Maik Fröbe | Friedrich-Schiller-Universität, Jena, Germany
Prof. Dr. Fabian Geier | Code.Berlin University of Applied Sciences, Berlin, Germany
Priv.-Doz Dr. Christian Geminn | University Kassel, Germany
Prof. Dr. Michael Granitzer | University Passau, Germany
Prof. Dr. Christian Guetl | Graz University of Technology, Austria
Prof. Dr. Matthias Hagen | Friedrich-Schiller-Universität, Jena, Germany
Dr. Tobias Hecking | German Aerospace Centre (DLR), Germany
Prof. Dr. Denis Helic | Graz University of Technology, Austria
Msc. Gijs Hendriksen | Radboud University, Netherlands
Prof. Dr. Andreas Henrich | University Bamberg, Germany
Prof. Djoerd Hiemstra | University of Twente, Radboud University, Netherlands
Msc. Phil Höfer | SUMA e.V., Germany
Prof. Dr. Robert Jäschke | Humboldt University Berlin & L3S, Hannover, Germany
Dr. Igor Jakovljevic | CERN, Geneva, Switzerland
Prof. Dr. Mohammed Kaicer | Faculty of Sciences Kenitra, Morocco
Dr. Jens Kersten | German Aerospace Centre, Jena, Germany
Dr. Jelena Mitrovic | University of Passau, Germany
Prof. Dr. Engelbert Niehaus | University Koblenz-Landau, Landau, Germany
Prof. Dr. Monica Palmirani | Università di Bologna, Italy
Prof. Dr. Melanie Platz | Saarland University, Germany
Prof. Dr. Martin Potthast | Kassel University, Germany
Prof. Dr. Mirko Presser | Aarhus University, Denmark
Prof. Dr. Georg Rehm | German Research Center for Artificial Intelligence (DFKI), Berlin, Germany
Dr. Renée Ridgway | Aarhus University, Denmark
Prof. Dr. Adam Roe | Code.Berlin University of Applied Sciences, Berlin, Germany
Dr. Tim Smith | CERN, Geneva, Switzerland
Prof. Dr. Benno Stein | Bauhaus University, Weimar, Germany
Dr. Nicola Tonellotto | University of Pisa, Italy
Eng. Marco Verile | European Commission, Joint Research Centre (JRC), Ispra, Italy
Dr. Stefan Voigt | Open Search Foundation, Germany
Dr. Andreas Wagner | CERN, Geneva, Switzerland













