YURKO, V. Inverse Problems for Sturm-Liouville Differential Operators on Closed Sets. Tamkang Journal of Mathematics, [S. l.], v. 50, n. 3, p. 199–206, 2019. DOI: 10.5556/j.tkjm.50.2019.3343. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/3343. Acesso em: 22 dec. 2024.