Serena Alvino and  Paola Forcheri and  Maria Grazia Ierardi and  Luigi Sarti,  Describing Learning Features of Reusable Resources: A Proposal.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2007, vol. 6(6). 208 - 214
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/7186.