BERNATSKAYA, J. N. Perturbation Method for a Parabolic Equation with Drift on a Riemannian Manifold. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 2, p. 148–159, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3739. Acesso em: 14 apr. 2025.