X. Fu, J. Budzik, и K. Hammond. IUI '00: Proceedings of the 5th International Conference on Intelligent User Interfaces, стр. 106--112. New York, NY, USA, ACM Press, (2000)
C. Zhai, A. Velivelli, и B. Yu. Proceedings of the Tenth ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, стр. 743--748. New York, NY, USA, ACM, (2004)
R. Agrawal, T. Imielinski, и A. Swami. SIGMOD '93: Proceedings of the 1993 ACM SIGMOD international conference on Management of data, стр. 207--216. New York, NY, USA, ACM Press, (1993)