CECCHINI, C., and M. FOGALE. “Une Esperience Di Plurilinguisim Inte Didatiche De Matematiche”. Gjornâl Furlan Des Siencis - Friulian Journal of Science, vol. 3, no. 5, Dec. 2004, pp. 9-15, https://www.gfs-fjs.net/index.php/gsf/article/view/54.