Gaeta, Angelo, Matteo Gaeta, Claudia Grieco, and Stefano Paolozzi. “Grid Based Software Solutions to Manage the Lifecycle of Collaborative Learning Environments”. Journal of e-Learning and Knowledge Society 5, no. 3 (December 21, 2009). Accessed March 28, 2024. http://www.je-lks.org/ojs/index.php/Je-LKS_EN/article/view/215.