BONDARENKO, V. G. Parametrix method for a parabolic equation on a Riemannian manifold. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 11, p. 1443–1448, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4745. Acesso em: 27 apr. 2025.