D. Mladenic, J. Brank, M. Grobelnik, и N. Milic-Frayling. SIGIR '04: Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval, стр. 234--241. New York, NY, USA, ACM Press, (2004)
M. Brezocnik, B. Vaupotic, J. Fridrih, и I. Pahole. RIM 2005 / 5th International scientific conference on
Production engineering, стр. 167--172. Faculty of Technical Engineering, Bihac, Bosnia and
Hercegovina, (14-17 September 2005)