MORASSI, ANTONIO. “An Introduction to One-Dimensional Inverse Eigenvalue Problems”. Gjornâl Furlan des Siencis - Friulian Journal of Science 31, no. 31 (May 2, 2021): 65–83. Accessed May 2, 2025. https://www.gfs-fjs.net/index.php/gsf/article/view/293.