VODEV, G. Semi-Classical Propagation of Singularities on Riemannian Manifolds without Boundary and Applications. CUBO, A Mathematical Journal, [S. l.], v. 5, n. 3, p. 306–329, 2003. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1679. Acesso em: 20 may. 2024.