G. Tran, A. Turk, B. Cambazoglu, and W. Nejdl. Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015, page 153--162. ACM, (2015)
C. Orellana-Rodriguez, E. Diaz-Aviles, and W. Nejdl. Proceedings of the 26th ACM Conference on Hypertext & Social Media, HT 2015, Guzelyurt, TRNC, Cyprus, September 1-4, 2015, page 185--194. ACM, (2015)