Giannini, Lidia, and Carlo Nati. “Immagini, Modelli Iconici E Modellizzazione Della Realtà”. Journal of e-Learning and Knowledge Society 3, no. 1 (October 14, 2012). Accessed October 22, 2021. https://www.je-lks.org/ojs/index.php/Je-LKS_EN/article/view/748.