W. Hamilton, J. Leskovec, and D. Jurafsky. Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), page 1489-1501. Berlin, Germany, Association for Computational Linguistics, (August 2016)
R. Ingham, and I. Marcus. Multilingualism in the Middle Ages: Communication and Miscommunication in the Premodern World, Mouton De Gruyter, Berlin, (2016)