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)
R. Agrawal, и R. Srikant. VLDB '94: Proceedings of the 20th International Conference on Very Large Data Bases, стр. 487--499. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (1994)
G. Angeli, и C. Manning. Proceedings of the Seventeenth Conference on Computational Natural Language Learning, стр. 133--142. Sofia, Bulgaria, Association for Computational Linguistics, (августа 2013)