P. Dolog, N. Henze, W. Nejdl, and M. Sintek. Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters, page 170--179. New York, NY, USA, ACM, (2004)
K. Sathiyamurthy, T. Geetha, and M. Senthilvelan. Proceedings of the International Conference on Advances in Computing, Communications and Informatics, page 1193--1198. New York, NY, USA, ACM, (2012)
M. Alian, and M. AL-Akhras. Proceedings of the 1st International Conference on Intelligent Semantic Web-Services and Applications, page 21:1--21:7. New York, NY, USA, ACM, (2010)