P. Johri, M. Shah, V. Shah, und P. Chandarana. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (3):
1113--1116(März 2015)
S. Ahirrao, L. Mahant, P. Dhanrale, und P. Kotwal. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (3):
1084--1086(März 2015)
H. Shen, und C. Sun. CSCW '02: Proceedings of the 2002 ACM conference on Computer supported cooperative work, Seite 77-86. New York, NY, USA, ACM Press, (2002)