Trace-based collaborative learning system. - Yacine Lafifi; Noureddine Gouasmi; Khaled Halimi; Wassila Herkas; Nassima Salhi; Assia Ghodbani (J. Comput. Inf. Technol., 2010)

Dynamic management of tutors' roles in an online learning system. - Yacine Lafifi; Karima Azzouz; Hajer Faci; Wassila Herkas (Int. J. Learn. Technol., 2010)