Björn Þór Jónsson

ORCID

Publication Activity (10 Years)

Years Active: 1996-2024
Publications (10 Years): 71

Top Venues

Publications

Nick Pantelidis, Maria Pegia, Damianos Galanopoulos, Konstantinos Apostolidis, Klearchos Stavrothanasopoulos, Anastasia Moumtzidou, Konstantinos Gkountakos, Ilias Gialampoukidis, Stefanos Vrochidis, Vasileios Mezaris, Ioannis Kompatsiaris, Björn Þór Jónsson
VERGE in VBS 2024. MMM (4) (2024)
Maria Pegia, Björn Þór Jónsson, Anastasia Moumtzidou, Sotiris Diplaris, Ilias Gialampoukidis, Stefanos Vrochidis, Ioannis Kompatsiaris
Multimodal 3D Object Retrieval. MMM (4) (2024)
Cathal Gurrin, Liting Zhou, Graham Healy, Werner Bailer, Duc-Tien Dang-Nguyen, Steve Hodges, Björn Þór Jónsson, Jakub Lokoc, Luca Rossetto, Minh-Triet Tran, Klaus Schöffmann
Introduction to the Seventh Annual Lifelog Search Challenge, LSC'24. ICMR (2024)
Omar Shahbaz Khan, Ujjwal Sharma, Hongyi Zhu, Stevan Rudinac, Björn Þór Jónsson
Exquisitor at the Lifelog Search Challenge 2024: Blending Conversational Search with User Relevance Feedback. LSC@ICMR (2024)
Maria Pegia, Ferran Agullo Lopez, Anastasia Moumtzidou, Alberto Gutierrez-Torre, Björn Þór Jónsson, Josep Lluis Berral-Garcia, Ilias Gialampoukidis, Stefanos Vrochidis, Ioannis Kompatsiaris
Time-Quality Tradeoff of MuseHash Query Processing Performance. MMM (3) (2024)
Ilham A. Qasse, Mohammad Hamdaqa, Björn Þór Jónsson
Immutable in Principle, Upgradeable by Design: Exploratory Study of Smart Contract Upgradeability. CoRR (2024)
Omar Shahbaz Khan, Hongyi Zhu, Ujjwal Sharma, Evangelos Kanoulas, Stevan Rudinac, Björn Þór Jónsson
Exquisitor at the Video Browser Showdown 2024: Relevance Feedback Meets Conversational Search. MMM (4) (2024)
Maria Eirini Pegia, Dimitris Georgalis, Nick Pantelidis, Björn Þór Jónsson, Anastasia Moumtzidou, Sotiris Diplaris, Ilias Gialampoukidis, Stefanos Vrochidis, Ioannis Kompatsiaris
3DMSE: An Interactive 3D Media Search Engine. ICMR (2024)
Omar Shahbaz Khan, Björn Þór Jónsson
User Relevance Feedback and Novices: Anecdotes from Exquisitor's Participation in Interactive Retrieval Competitions. CBMI (2023)
Ilham A. Qasse, Mohammad Hamdaqa, Björn Þór Jónsson
Smart Contract Upgradeability on the Ethereum Blockchain Platform: An Exploratory Study. CoRR (2023)
Aaron Duane, Björn Þór Jónsson, Hyowon Lee, Cathal Gurrin
LAD: an application design model to support the analysis of large-scale personal data collections generated by lifelogging. Pers. Ubiquitous Comput. 27 (6) (2023)
Werner Bailer, Rahel Arnold, Vera Benz, Davide Coccomini, Anastasios Gkagkas, Gylfi Þór Guðmundsson, Silvan Heller, Björn Þór Jónsson, Jakub Lokoc, Nicola Messina, Nick Pantelidis, Jiaxin Wu
Improving Query and Assessment Quality in Text-Based Interactive Video Retrieval Evaluation. ICMR (2023)
Omar Shahbaz Khan, Martin Aumüller, Björn Þór Jónsson
Suitability of Nearest Neighbour Indexes for Multimedia Relevance Feedback. SISAP (2023)
Ly-Duyen Tran, Manh-Duy Nguyen, Duc-Tien Dang-Nguyen, Silvan Heller, Florian Spiess, Jakub Lokoc, Ladislav Peska, Thao-Nhu Nguyen, Omar Shahbaz Khan, Aaron Duane, Björn Þór Jónsson, Luca Rossetto, An-Zi Yen, Ahmed Alateeq, Naushad Alam, Minh-Triet Tran, Graham Healy, Klaus Schoeffmann, Cathal Gurrin
Comparing Interactive Retrieval Approaches at the Lifelog Search Challenge 2021. IEEE Access 11 (2023)
Cathal Gurrin, Björn Þór Jónsson, Duc-Tien Dang Nguyen, Graham Healy, Jakub Lokoc, Liting Zhou, Luca Rossetto, Minh-Triet Tran, Wolfgang Hürst, Werner Bailer, Klaus Schoeffmann
Introduction to the Sixth Annual Lifelog Search Challenge, LSC'23. ICMR (2023)
Maria Pegia, Björn Þór Jónsson, Anastasia Moumtzidou, Ilias Gialampoukidis, Stefanos Vrochidis, Ioannis Kompatsiaris
MuseHash: Supervised Bayesian Hashing for Multimodal Image Representation. ICMR (2023)
Gylfi Þór Guðmundsson, Björn Þór Jónsson
Is Quantized ANN Search Cursed? Case Study of Quantifying Search and Index Quality. SISAP (2023)
Ilham A. Qasse, Shailesh Mishra, Björn Þór Jónsson, Foutse Khomh, Mohammad Hamdaqa
Chat2Code: A Chatbot for Model Specification and Code Generation, The Case of Smart Contracts. SSE (2023)
Björn Þór Jónsson, Magda Pischetola, Nanna Inie, Mats Daniels, Claus Brabrand
Student Perspectives on On-site versus Online Teaching throughout the Covid-19 Pandemic. FIE (2022)
Jakub Lokoc, Klaus Schoeffmann, Werner Bailer, Luca Rossetto, Björn Þór Jónsson
Open Challenges of Interactive Video Search and Evaluation. ACM Multimedia (2022)
Cathal Gurrin, Liting Zhou, Graham Healy, Björn Þór Jónsson, Duc-Tien Dang-Nguyen, Jakub Lokoc, Minh-Triet Tran, Wolfgang Hürst, Luca Rossetto, Klaus Schöffmann
Introduction to the Fifth Annual Lifelog Search Challenge, LSC'22. ICMR (2022)
Maria Eirini Pegia, Anastasia Moumtzidou, Ilias Gialampoukidis, Björn Þór Jónsson, Stefanos Vrochidis, Ioannis Kompatsiaris
BiasUNet: Learning Change Detection over Sentinel-2 Image Pairs. CBMI (2022)
Aaron Duane, Björn Þór Jónsson
ViRMA: Virtual Reality Multimedia Analytics. ICMR (2022)
Aaron Duane, Björn Þór Jónsson
ViRMA: Virtual Reality Multimedia Analytics at Video Browser Showdown 2022. MMM (2) (2022)
Kim I. Schild, Alexandra M. Bagi, Magnus Holm Mamsen, Omar Shahbaz Khan, Jan Zahálka, Björn Þór Jónsson
XQM: Search-Oriented vs. Classifier-Oriented Relevance Feedback on Mobile Phones. MMM (2) (2022)
Jakub Lokoc, Werner Bailer, Kai Uwe Barthel, Cathal Gurrin, Silvan Heller, Björn Þór Jónsson, Ladislav Peska, Luca Rossetto, Klaus Schoeffmann, Lucia Vadicamo, Stefanos Vrochidis, Jiaxin Wu
A Task Category Space for User-Centric Comparative Multimedia Search Evaluations. MMM (1) (2022)
Silvan Heller, Viktor Gsteiger, Werner Bailer, Cathal Gurrin, Björn Þór Jónsson, Jakub Lokoc, Andreas Leibetseder, Frantisek Mejzlík, Ladislav Peska, Luca Rossetto, Konstantin Schall, Klaus Schoeffmann, Heiko Schuldt, Florian Spiess, Ly-Duyen Tran, Lucia Vadicamo, Patrik Veselý, Stefanos Vrochidis, Jiaxin Wu
Interactive video retrieval evaluation at a distance: comparing sixteen interactive video search systems in a remote setting at the 10th Video Browser Showdown. Int. J. Multim. Inf. Retr. 11 (1) (2022)
Omar Shahbaz Khan, Ujjwal Sharma, Björn Þór Jónsson, Dennis C. Koelma, Stevan Rudinac, Marcel Worring, Jan Zahálka
Exquisitor at the Video Browser Showdown 2022. MMM (2) (2022)
Björn Þór Jónsson, Aaron Duane, Nikolaj Mertz
Relational Database Performance for Multimedia: A Case Study. CBMI (2022)
Mathias Glistrup, Stevan Rudinac, Björn Þór Jónsson
Urban Image Geo-Localization Using Open Data on Public Spaces. CBMI (2022)
Maria Pegia, Anastasia Moumtzidou, Ilias Gialampoukidis, Björn Þór Jónsson, Stefanos Vrochidis, Ioannis Kompatsiaris
BiasHash: A Bayesian Hashing Framework for Image Retrieval. IVMSP (2022)
Jihye Shin, Alexandra Waldau, Aaron Duane, Björn Þór Jónsson
PhotoCube at the Lifelog Search Challenge 2021. LSC@ICMR (2021)
Jakub Lokoc, Patrik Veselý, Frantisek Mejzlík, Gregor Kovalcík, Tomás Soucek, Luca Rossetto, Klaus Schoeffmann, Werner Bailer, Cathal Gurrin, Loris Sauter, Jaeyub Song, Stefanos Vrochidis, Jiaxin Wu, Björn Þór Jónsson
Is the Reign of Interactive Search Eternal? Findings from the Video Browser Showdown 2020. ACM Trans. Multim. Comput. Commun. Appl. 17 (3) (2021)
Alexandra M. Bagi, Kim I. Schild, Omar Shahbaz Khan, Jan Zahálka, Björn Þór Jónsson
XQM: Interactive Learning on Mobile Phones. MMM (2) (2021)
Emil Knudsen, Thomas Holstein Qvortrup, Omar Shahbaz Khan, Björn Þór Jónsson
XQC at the Lifelog Search Challenge 2021: Interactive Learning on a Mobile Device. LSC@ICMR (2021)
Aaron Duane, Björn Þór Jónsson
ViRMA: Virtual Reality Multimedia Analytics at LSC 2021. LSC@ICMR (2021)
Omar Shahbaz Khan, Aaron Duane, Björn Þór Jónsson, Jan Zahálka, Stevan Rudinac, Marcel Worring
Exquisitor at the Lifelog Search Challenge 2021: Relationships Between Semantic Classifiers. LSC@ICMR (2021)
Omar Shahbaz Khan, Björn Þór Jónsson, Jan Zahálka, Stevan Rudinac, Marcel Worring
Impact of Interaction Strategies on User Relevance Feedback. ICMR (2021)
Alexander Christian Faisst, Björn Þór Jónsson
LifeMon: A MongoDB-Based Lifelog Retrieval Prototype. LSC@ICMR (2021)
Omar Shahbaz Khan, Björn Þór Jónsson, Mathias Dybkjær Larsen, Liam Alex Sonto Poulsen, Dennis C. Koelma, Stevan Rudinac, Marcel Worring, Jan Zahálka
Exquisitor at the Video Browser Showdown 2021: Relationships Between Semantic Classifiers. MMM (2) (2021)
Cathal Gurrin, Björn Þór Jónsson, Klaus Schöffmann, Duc-Tien Dang-Nguyen, Jakub Lokoc, Minh-Triet Tran, Wolfgang Hürst, Luca Rossetto, Graham Healy
Introduction to the Fourth Annual Lifelog Search Challenge, LSC'21. ICMR (2021)
Aaron Duane, Björn Þór Jónsson, Cathal Gurrin
Virtual Reality Lifelog Explorer: A Prototype for Immersive Lifelog Analytics. AIVR (2020)
Sabina Hult, Line Bay Kreiberg, Sami Sebastian Brandt, Björn Þór Jónsson
Analysis of the Effect of Dataset Construction Methodology on Transferability of Music Emotion Recognition Models. ICMR (2020)
Aaron Duane, Björn Þór Jónsson, Cathal Gurrin
VRLE: Lifelog Interaction Prototype in Virtual Reality: Lifelog Search Challenge at ACM ICMR 2020. LSC@ICMR (2020)
Omar Shahbaz Khan, Mathias Dybkjær Larsen, Liam Alex Sonto Poulsen, Björn Þór Jónsson, Jan Zahálka, Stevan Rudinac, Dennis C. Koelma, Marcel Worring
Exquisitor at the Lifelog Search Challenge 2020. LSC@ICMR (2020)
Omar Shahbaz Khan, Björn Þór Jónsson, Stevan Rudinac, Jan Zahálka, Hanna Ragnarsdóttir, Þórhildur Þorleiksdóttir, Gylfi Þór Guðmundsson, Laurent Amsaleg, Marcel Worring
Interactive Learning for Multimedia at Large. ECIR (1) (2020)
Björn Þór Jónsson, Omar Shahbaz Khan, Dennis C. Koelma, Stevan Rudinac, Marcel Worring, Jan Zahálka
Exquisitor at the Video Browser Showdown 2020. MMM (2) (2020)
Cathal Gurrin, Tu-Khiem Le, Van-Tu Ninh, Duc-Tien Dang-Nguyen, Björn Þór Jónsson, Jakub Lokoc, Wolfgang Hürst, Minh-Triet Tran, Klaus Schöffmann
Introduction to the Third Annual Lifelog Search Challenge (LSC'20). ICMR (2020)
Hanna Ragnarsdóttir, Þórhildur Þorleiksdóttir, Omar Shahbaz Khan, Björn Þór Jónsson, Gylfi Þór Guðmundsson, Jan Zahálka, Stevan Rudinac, Laurent Amsaleg, Marcel Worring
Exquisitor: Breaking the Interaction Barrier for Exploration of 100 Million Images. ACM Multimedia (2019)
Snorri Gíslason, Björn Þór Jónsson, Laurent Amsaleg
Integration of Exploration and Search: A Case Study of the M ^3 3 Model. MMM (1) (2019)
Omar Shahbaz Khan, Björn Þór Jónsson, Jan Zahálka, Stevan Rudinac, Marcel Worring
Exquisitor at the Lifelog Search Challenge 2019. LSC@ICMR (2019)
Björn Þór Jónsson, Omar Shahbaz Khan, Hanna Ragnarsdóttir, Þórhildur Þorleiksdóttir, Jan Zahálka, Stevan Rudinac, Gylfi Þór Guðmundsson, Laurent Amsaleg, Marcel Worring
Exquisitor: Interactive Learning at Large. CoRR (2019)
Anders Munck Højsgaard, Björn Þór Jónsson, Philippe Bonnet
Index Maintenance Strategy and Cost Model for Extended Cluster Pruning. SISAP (2019)
Gylfi Þór Gudmundsson, Björn Þór Jónsson, Laurent Amsaleg, Michael J. Franklin
Prototyping a Web-Scale Multimedia Retrieval Service Using Spark. ACM Trans. Multim. Comput. Commun. Appl. 14 (3s) (2018)
Gylfi Por Gudmundsson, Christian Andreas Jacobsen, Hilmar Tryggvason, Björn Þór Jónsson
DeCP-Live: A Web-Interface for DeCP, a Distributed High-Throughput CBIR System. CBMI (2018)
Laurent Amsaleg, Cathal Gurrin, Björn Þór Jónsson, Shin'ichi Satoh
Introduction to Special Issue of the 23rd International Conference on Multimedia Modeling (MMM 2017). Multim. Tools Appl. 77 (22) (2018)
Jan Zahálka, Stevan Rudinac, Björn Þór Jónsson, Dennis C. Koelma, Marcel Worring
Blackthorn: Large-Scale Interactive Multimodal Learning. IEEE Trans. Multim. 20 (3) (2018)
Daniel Brur Sigurgeirsson, Marta Lárusdóttir, Mohammad Hamdaqa, Mats Daniels, Björn Þór Jónsson
Learning Outcome Outcomes: An Evaluation of Quality. FIE (2018)
Laurent Amsaleg, Björn Þór Jónsson, Herwig Lejsek
Scalability of the NV-tree: Three Experiments. SISAP (2018)
Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg
Transactional Support for Visual Instance Search. SISAP (2018)
Herwig Lejsek, Björn Þór Jónsson, Laurent Amsaleg, Friðrik Heiðar Ásmundsson
Dynamicity and Durability in Scalable Visual Instance Search. CoRR (2018)
Gylfi Þór Guðmundsson, Laurent Amsaleg, Björn Þór Jónsson, Michael J. Franklin
Towards Engineering a Web-Scale Multimedia Service: A Case Study Using Spark. MMSys (2017)
Haukur Pálmason, Björn Þór Jónsson, Laurent Amsaleg, Markus Schedl, Peter Knees
On Competitiveness of Nearest-Neighbor-Based Music Classification: A Methodological Critique. SISAP (2017)
Haukur Pálmason, Björn Þór Jónsson, Markus Schedl, Peter Knees
Music Genre Classification Revisited: An In-Depth Examination Guided by Music Experts. CMMR (2017)
Ivan Luiz Picoli, Carla Villegas Pasco, Björn Þór Jónsson, Luc Bouganim, Philippe Bonnet
uFLIP-OC: Understanding Flash I/O Patterns on Open-Channel Solid-State Drives. APSys (2017)
Björn Þór Jónsson, Laurent Amsaleg, Herwig Lejsek
SSD Technology Enables Dynamic Maintenance of Persistent High-Dimensional Indexes. ICMR (2016)
Björn Þór Jónsson, Marcel Worring, Jan Zahálka, Stevan Rudinac, Laurent Amsaleg
Ten Research Questions for Scalable Multimedia Analytics. MMM (2) (2016)
Björn Þór Jónsson, Marta Kristín Lárusdóttir, Mats Daniels, Alison Clear, Tony Clear, Roger McDermott
Aligning Quality Assurance at the course unit and educational program levels. FIE (2016)
Jan Zahálka, Stevan Rudinac, Björn Þór Jónsson, Dennis C. Koelma, Marcel Worring
Interactive Multimodal Learning on 100 Million Images. ICMR (2016)
Silas Luttenberger, Reiner Creutzburg, Björn Þór Jónsson
Presentation of a Web service for video identification based on Videntifier techniques. MOBMU (2015)
Björn Þór Jónsson, Grímur Tómasson, Hlynur Sigurþórsson, Áslaug Eiríksdóttir, Laurent Amsaleg, Marta Kristín Lárusdóttir
A Multi-Dimensional Data Model for Personal Photo Browsing. MMM (2) (2015)
Björn Þór Jónsson, Áslaug Eiríksdóttir, Ólafur Waage, Grímur Tómasson, Hlynur Sigurþórsson, Laurent Amsaleg
M3 + P3 + O3 = Multi-D Photo Browsing. MMM (2) (2014)
Gylfi Þór Gudmundsson, Laurent Amsaleg, Björn Þór Jónsson
Distributed high-dimensional index creation using Hadoop, HDFS and C++. CBMI (2012)
Gylfi Þór Gudmundsson, Laurent Amsaleg, Björn Þór Jónsson
Impact of Storage Technology on the Efficiency of Cluster-Based High-Dimensional Index Creation. DASFAA Workshops (2012)
Grímur Tómasson, Gisli Kristjan Olafsson, Hlynur Sigurþórsson, Björn Þór Jónsson, Kristjan Runarsson, Laurent Amsaleg
Using PhotoCube as an extensible demonstration platform for advanced image analysis techniques. CBMI (2012)
Herwig Lejsek, Björn Þór Jónsson, Laurent Amsaleg
NV-Tree: nearest neighbors at the billion scale. ICMR (2011)
Grímur Tómasson, Hlynur Sigurþórsson, Björn Þór Jónsson, Laurent Amsaleg
PhotoCube: effective and efficient multi-dimensional browsing of personal photo collections. ICMR (2011)
Arnar Ólafsson, Björn Þór Jónsson, Laurent Amsaleg, Herwig Lejsek
Dynamic behavior of balanced NV-trees. Multim. Syst. 17 (2) (2011)
Herwig Lejsek, Hrönn Þormóðsdóttir, Friðrik Heiðar Ásmundsson, Kristleifur Daðason, Ársæll Þór Jóhannsson, Björn Þór Jónsson, Laurent Amsaleg
Videntifier" Forensic: large-scale video identification in practice. MiFor@MM (2010)
Matias Bjørling, Philippe Bonnet, Luc Bouganim, Björn Þór Jónsson
uFLIP: Understanding the Energy Consumption of Flash Devices. IEEE Data Eng. Bull. 33 (4) (2010)
Kristleifur Daðason, Herwig Lejsek, Ársæll Þór Jóhannsson, Björn Þór Jónsson, Laurent Amsaleg
descriptors using CUDA. ACM Multimedia (2010)
Matias Bjørling, Lionel Le Folgoc, Ahmed Mseddi, Philippe Bonnet, Luc Bouganim, Björn Þór Jónsson
Performing sound flash device measurements: some lessons from uFLIP. SIGMOD Conference (2010)
Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg
NV-Tree: An Efficient Disk-Based Index for Approximate Search in Very Large High-Dimensional Collections. IEEE Trans. Pattern Anal. Mach. Intell. 31 (5) (2009)
Stefán Freyr Stefánsson, Björn Þór Jónsson, Kristinn R. Thórisson
A YARP-based Architectural Framework for Robotic Vision Applications. VISAPP (1) (2009)
Herwig Lejsek, Ársæll Þór Jóhannsson, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Kristleifur Daðason, Laurent Amsaleg
Videntifier™ forensic: a new law enforcement service for automatic identification of illegal video material. MiFor@MM (2009)
Björn Þór Jónsson
SIGMOD 2009 best demonstration competition. SIGMOD Rec. 38 (3) (2009)
Friðrik Heiðar Ásmundsson, Herwig Lejsek, Kristleifur Daðason, Björn Þór Jónsson, Laurent Amsaleg
forensic: robust and efficient detection of illegal multimedia. ACM Multimedia (2009)
Luc Bouganim, Björn Þór Jónsson, Philippe Bonnet
uFLIP: Understanding Flash IO Patterns. CIDR (2009)
Luc Bouganim, Björn Þór Jónsson, Philippe Bonnet
uFLIP: Understanding Flash IO Patterns CoRR (2009)
Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria
Report from the Third International Workshop on Computer Vision Meets Databases (CVDB 2007). SIGMOD Rec. 37 (1) (2008)
Arnar Ólafsson, Björn Þór Jónsson, Laurent Amsaleg
Dynamic behavior of balanced NV-trees. CBMI (2008)
Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria
Introduction to special issue on Computer Vision meets Databases. Multim. Tools Appl. 38 (2) (2008)
Harald Kosch, Laurent Amsaleg, Eric J. Pauwels, Björn Þór Jónsson
Topic 11 Distributed and High-Performance Multimedia. Euro-Par (2007)
Björn Þór Jónsson, Herwig Lejsek, Laurent Amsaleg
Project: Towards Efficient and Effective Support for Large-Scale High-Dimensional Indexing. CBMI (2007)
Kristleifur Daðason, Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg
Videntifier: identifying pirated videos in real-time. ACM Multimedia (2007)
Björn Þór Jónsson, María Arinbjarnar, Bjarnsteinn Þórsson, Michael J. Franklin, Divesh Srivastava
Performance and overhead of semantic cache management. ACM Trans. Internet Techn. 6 (3) (2006)
Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg
Scalability of local image descriptors: a comparative study. ACM Multimedia (2006)
Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg
Blazingly fast image copyright enforcement. ACM Multimedia (2006)
Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria
Introduction. Multim. Tools Appl. 31 (3) (2006)
Árni Már Jónsson, Björn Þór Jónsson
Towards pB+Trees in the Field: Implementation Choices and Performance. ExpDB (2006)

Björn Þór Jónsson.css-eqlu8i{font-size:small;padding-left:4px;}

Publication Activity (10 Years)

Top Topics

Top Venues

Björn Þór Jónsson