ABDERRAHMANE, S. Semiclassical analysis for Hamiltonian in the Born-Oppenheimer approximation. MATEMATIKA: Malaysian Journal of Industrial and Applied Mathematics, [S. l.], v. 30, p. 135–144, 2014. DOI: 10.11113/matematika.v30.n.705. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/705. Acesso em: 19 sep. 2021.