T. Rocktäschel, S. Singh, and S. Riedel. NAACL HLT 2015, The 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Denver, Colorado, USA, May 31 - June 5, 2015, page 1119--1129. (2015)
D. Andrzejewski, and X. Zhu. Proceedings of the NAACL HLT 2009 Workshop on Semi-Supervised Learning for Natural Language Processing, page 43--48. Stroudsburg, PA, USA, Association for Computational Linguistics, (2009)