@inproceedings {
Liang-2012-CEL,
author= "M. Liang, J. Guerra, G.E. Marai, P. Brusilovsky",
title= "Collaborative E-Learning through Open Social Student Modeling and Progressive Zoom Navigation",
booktitle= "The 8th IEEE International Conference on Collaborative Computing: Networking, Applications and Worksharing",
note= "In Press",
year= "2012",
pages= "1--10",
}