K. Eaton, L. Wiles, и D. O'Malley. Primary dental care : journal of the Faculty of General Dental Practitioners (UK), 19 (2):
85-91(апреля 2012)6687<m:linebreak></m:linebreak>JID: 9617339; ppublish;<m:linebreak></m:linebreak>Disseny.
S. Bergsma, M. Post, и D. Yarowsky. Proceedings of the 2012 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, стр. 327--337. Association for Computational Linguistics, (2012)