THAKAR, S.; DEMANNA, P. Periodic Indefinite Sturm-Liouville Problems With One Turning Point. The Journal of the Indian Mathematical Society, [S. l.], v. 89, n. 1-2, p. 182–197, 2022. DOI: 10.18311/jims/2022/26181. Disponível em: https://informaticsjournals.co.in/index.php/jims/article/view/26181. Acesso em: 7 nov. 2024.