I. Dhillon, S. Mallela, и D. Modha. Proceedings of the ninth ACM SIGKDD international conference on Knowledge discovery and data mining, стр. 89--98. ACM, (2003)
T. Hofmann. Proceedings of the 22nd annual international ACM SIGIR conference on Research and development in information retrieval, стр. 50--57. ACM, (1999)
C. Lin, Y. He, и R. Everson. Proceedings of the Fourteenth Conference on Computational Natural Language Learning, стр. 144--152. Association for Computational Linguistics, (2010)