Jeremic, Zoran, Nikola Milikic, Jelena Jovanovic, Mirjana Brkovic, and Filip Radulovic. “Using Online Presence to Improve Online Collaborative Learning”. International Journal of Emerging Technologies in Learning (iJET) 7, no. S1 (February 15, 2012): pp. 28–35. Accessed November 25, 2024. https://online-journals.org/index.php/i-jet/article/view/1918.