MORASSI, ANTONIO. “Introduzion Ai Problemis Inviers Dai autovalˆors in Une Dimension”. Gjornâl Furlan des Siencis - Friulian Journal of Science 31, no. 31 (May 3, 2021): 47–64. Accessed May 2, 2025. https://www.gfs-fjs.net/index.php/gsf/article/view/292.