G. Arumugam, M.Thangaraj, and R. Sasirekha. International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), 1, page 09-19. ACM, (April 2011)
M. Yahya, K. Berberich, S. Elbassuoni, M. Ramanath, V. Tresp, and G. Weikum. Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning, page 379--390. Stroudsburg, PA, USA, Association for Computational Linguistics, (2012)
A. Jaffri. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 915--919. Berlin, Heidelberg, Springer Verlag, (November 2007)