WASET
    Anna Angelini and  Enrica Gentile and  Paola Plantamura and  Vito Leonardo Plantamura,  Web Information System for e-Learning.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2007, vol. 8(8). 382 - 385
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/13013.