1. Black PE (2005) Dictionary of algorithms and data structures. U.S. National Institute of Standards and Technology (NIST)
2. Brown PF, Della Pietra SA, Della Pietra VJ, Mercer RL (1993) The Mathematics of Statistical Machine Translation: Parameter Estimation. Computational Linguistics 19(2):263–311
3. Duda RO, Hart PE, Stork DG (2001) Pattern classification, 2nd edn. Wiley Interscience, New York
4. Hwa R, Resnik P, Weinberg A, Cabezas C, Kolak O (2005) Bootstrapping parsers via syntactic projections across parallel texts. Nat Lang Eng 11:311–325
5. Koehn P, Hoang H (2007) Factored translation models. In: Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning, Prague, Czech Republic, pp 868–876