PRONSKA, N.I. Reconstruction of energy-dependent Sturm-Liouville equations from two spectra. II. Carpathian Mathematical Publications, [S. l.], v. 5, n. 2, p. 315–325, 2013. DOI: 10.15330/cmp.5.2.315-325. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1323. Acesso em: 23 nov. 2024.