J. Burger, J. Henderson, G. Kim, и G. Zarrella. Proceedings of the Conference on Empirical Methods in Natural Language Processing, стр. 1301--1309. Stroudsburg, PA, USA, Association for Computational Linguistics, (2011)
Z. Cheng, J. Caverlee, и K. Lee. Proceedings of the 19th ACM International Conference on Information and Knowledge Management, стр. 759--768. New York, NY, USA, ACM, (2010)
I. Weber, V. Garimella, и A. Teka. Advances in Information Retrieval, том 7814 из Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2013)