1. Braune, F. and Fraser, A. (2010). “Improved Unsupervised Sentence Alignment for Symmetrical and Asymmetrical Parallel Corpora.” In Proceedings of COLING 2010, pp. 81–89.
2. Brown, P. F., Petra, S. A. D., Pietra, V. J. D., and Mercer, R. L. (1993). “The Mathematics of Statistical Machine Translation: Parameter Estimation.” Computational Linguistics, 19 (2), pp. 263–311.
3. Deng, Y., Kumar, S., and Byrne, W. (2007). “Segmentation and Alignment of Parallel Text for Statistical Machine Translation.” Natural Language Engineering, 13 (3), pp. 235–260.
4. Gale, W. A. and Church, K. W. (1993). “A Program for Aligning Sentences in Bilingual Corpora.” Computational Linguistics, 19 (1), pp. 75–102.
5. Korte, B. H. and Vygen, J. (2008). Combinatorial Optimization: Theory and Algorithms. Springer Verlag.