VE Bozdag, Q Gao, ME Warnier, GJPM Houben (2013), Analyzing viewpoint diversity in twitter, N Kamal, S Fels, M Fergusson et al (Eds.), In Proceedings Workshop Designing Social Media for Change - CHI 2013 p.1-4, Association for Computing Machinery (ACM).

VE Bozdag, Q Gao (2013), An empirical research design for analyzing information diversity in Twitter for Dutch and Turkish users, T Ward Bynum, W Fleishman, A Gerdes, G Møldrup Nielsen, S Rogerson (Eds.), In The possibilities of ethical ICT - Proceedings ETHICOMP 2013 p.369-380.

Alessandro Bozzon, Luca Galli (2013), An Introduction to Human Computation and Games with a Purpose, In Web Engineering - 13th International Conference, ICWE 2013 p.514-517, Springer.

C Hauff (2013), A study on the accuracy of Flickr's geotag data, GJF Jones, P Sheridan, D Kelly, M de Rijke, T Sakai (Eds.), In Proceedings of the 36th international ACM SIGIR conference on research and development in information retrieval p.1037-1040, Association for Computing Machinery (ACM).

F Abel, E Herder, GJPM Houben, N Henze, D Krause (2013), Cross-system User Modeling and Personalization on the Social Web, In User Modeling and User-Adapted Interaction: the journal of personalization research Volume 23 p.169-209.

B Loni, MA Larson, A Bozzon, L Gottlieb (2013), Crowdsourcing for Social Multimedia at MediaEval 2013: Challenges, data set, and evaluation, M Larson, X Anguera (Eds.), In Proceedings of MediaEval 2013 p.1-2.

D Juric, L Hollink, GJPM Houben (2013), Discovering links between political debates and media, F Daniel, P Dolog, Q Li (Eds.), In Proceedings - 13th International Conference on Web Engineering (ICWE 2013) p.367-375, Springer.

Y Luo, GHL Fletcher, AJH Hidders, Y Wu, P de Bra (2013), External memory k-bisimulation reduction of big graphs, Q He, A Iyengar (Eds.), In Proceedings of the 22nd ACM international conference on information and knowledge management p.919-928, Association for Computing Machinery (ACM).

JLG Dietz, J Filipe (2013), Foreword: 5th international conference on knowledge engineering and ontology development, J Dietz, J Filipe (Eds.), In Proceedings of 5th international conference on knowledge engineering and ontology development p.9-11, Springer.

K Tao, F Abel, C Hauff, GJPM Houben, U. Gadiraju (2013), Groundhog Day: Near-Duplicate Detection on Twitter, D Schwabe, V Almeida, H Glaser (Eds.), In Proceedings 22nd International World Wide Web Conference p.1273-1283, Association for Computing Machinery (ACM).