Badr Hssina and  Belaid Bouikhalene and  Abdelkrim Merbouha,  Towards an E-Learning Platform Multi-Agent Based On the E-Tutoring for Collaborative Work.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2015, vol. 100(4). 1007 - 1011
    [viewed 03 April 2020]. Available from: https://publications.waset.org/pdf/10001653.