Usability Evaluation of Information Literacy Programmes: The Case Study of “Orion” - Garoufallou, Emmanouel; Dani, Anxhela; Chatzopoulou, Chrysanthi; Siatri, Rania; Virkus, Sirje; Mystakopoulos, Fotis; Antonopoulou, Stavroula (Communications in computer and information science, 2015)