SKRYPNIK, I. I. Limiting behavior of the solutions to linear second-order parabolic equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 7, p. 1029–1038, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5896. Acesso em: 14 apr. 2025.