ISARYUK, I. M.; PUKALSKYI, I. D. Nonlocal Parabolic Problem with Degeneration. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 2, p. 208–215, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2124. Acesso em: 5 dec. 2025.