E. Alfonseca, K. Filippova, J. Delort, und G. Garrido. Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics: Short Papers - Volume 2, Seite 54--59. Stroudsburg, PA, USA, Association for Computational Linguistics, (2012)
B. Roth, G. Chrupala, M. Wiegand, M. Singh, und D. Klakow. Proceedings of the Fifth Text Analysis Conference (TAC 2012), Gaithersburg, Maryland, USA, National Institute of Standards and Technology (NIST), (November 2012)