1.
Rigutti S, Paoletti G, Morandini A. Lifelong learning and e-learning 2.0: the contribution of usability studies. Je-LKS [Internet]. 2009Nov.16 [cited 2019Nov.15];4(1). Available from: https://www.je-lks.org/ojs/index.php/Je-LKS_EN/article/view/265