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