C. Lampe, N. Ellison, и C. Steinfield. Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work, стр. 167--170. New York, NY, USA, ACM, (2006)
M. Morita, и Y. Shinoda. 17th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, стр. 272--281. Springer-Verlag New York, Inc., (1994)
This is a group connected to the SOP2 class at the Department of information and communication sciences at the Faculty of humanities and social sciences University of Zagreb. SOP2 is a course dealing with document indexing, document searching and related practices.