PUKALSKYI, I. D. Boundary-Value Problem for Linear Parabolic Equations with Degeneracies. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 57, n. 3, p. 377–387, 2005. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3605. Acesso em: 6 dec. 2025.