M. Hearst. Proceedings of the 14th Conference on Computational Linguistics - Volume 2, стр. 539--545. Stroudsburg, PA, USA, Association for Computational Linguistics, (1992)
T. Kenter, и M. de Rijke. Proceedings of the 24th ACM International on Conference on Information and Knowledge Management, стр. 1411--1420. New York, NY, USA, ACM, (2015)