D. Millen, M. Yang, S. Whittaker, and J. Feinberg. ECSCW 2007: Proceedings of the 10th European Conference on Computer-Supported Cooperative Work, page 21--40. SWEETAPPLE HOUSE CATTESHALL RD FARNCOMBE, GODALMING GU7 1NH, SURREY, ENGLAND, SPRINGER-VERLAG LONDON LTD, (2007)
E. Toms. Proceedings of the First DELOS Network of Excellence Workshop on Information Seeking, Searching and Querying in Digital Libraries, page 11–15. Citeseer, (2000)
D. Tran, S. Bloehdorn, P. Cimiano, and P. Haase. Proceedings of the 1st International Conference on the Theory of Information Retrieval (ICTIR'07), (October 2007)