M. Zhang, J. Zhang, J. Su, and G. Zhou. Proceedings of the 21st International Conference on Computational Linguistics and the 44th annual meeting of the Association for Computational Linguistics, page 825--832. Stroudsburg, PA, USA, Association for Computational Linguistics, (2006)
M. Thein, and M. Thwin. International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), volume 2 of IFIP Advances in Information and Communication Technology, page 13-32. Springer, (December 2012)