KOCHMANSKI, S. Asymptotic behavior of the coefficients of solutions of the Hill equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 4, p. 430–432, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5741. Acesso em: 18 dec. 2025.