MORAME, Abderemane; TRUC, Françoise. Accuracy on eigenvalues for a Schrödinger operator with a degenerate potential in the semi-classical limit. CUBO, A Mathematical Journal, [S. l.], v. 9, n. 2, p. 1–14, 2007. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1589. Acesso em: 12 oct. 2025.