Source: https://www.researchgate.net/profile/Belkacem-Kouninef/publication/237609489_CONCEPTION_ET_REALISATION_D'UNE_PLATE_FORME_E-LEARNING_AVEC_MIGRATION_AU_M-LEARNING/links/00b7d5299ca8e8f78b000000/CONCEPTION-ET-REALISATION-DUNE-PLATE-FORME-E-LEARNING-AVEC-MIGRATION-AU-M-LEARNING.pdf