M. Eisenstadt, J. Komzak, and S. A. Cerri, Peer conversations for e-learning in the grid, 1st International ELeGI Conference on Advanced Technology for Enhanced Learning, Vico Equense, 2005.
URL : https://hal.archives-ouvertes.fr/lirmm-00105967

M. Steves and J. Scholtz, A Framework for Evaluating Collaborative Systems in the Real World, Proceedings of the 38th Annual Hawaii International Conference on System Sciences, 2005.
DOI : 10.1109/HICSS.2005.15

. Westphal, Measuring Collaboration Performance in Virtual Organizations, 2007.
DOI : 10.1007/978-0-387-73798-0_4

R. Chebil, W. Lejouad-chaari, and S. A. Cerri, An E-Collaboration New Vision and Its Effects on Performance Evaluation, International Journal of Computer Information Systems and Industrial Management Application, vol.3, pp.560-567, 2011.
URL : https://hal.archives-ouvertes.fr/lirmm-00646993