T. Tran, N. Tran, A. Hadgu, and R. Jäschke. Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing (EMNLP), page 97--106. Association for Computational Linguistics, (September 2015)
S. Pujari, A. Hadgu, E. Lex, and R. Jäschke. Proceedings of the 15th International Conference on Knowledge Technologies and Data-driven Business, New York, NY, USA, ACM, (2015)