I. Doush, and E. Pontelli. Computers Helping People with Special Needs, volume 6179 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-642-14097-6_60.(2010)
M. Barla, and M. Bielikov�. Computational Collective Intelligence. Semantic Web, Social Networks and Multiagent System, volume 5796 of Lecture Notes in Computer Science, page 309-320. Springer, (2009)