BEREZOVSKY, A. A.; MITROPOLSKIY, Yu. A.; SHKHANUKOV-LAFISHEV, M. Kh. Nonlinear nonlocal problems for a parabolic equation in a two-dimensional domain. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 2, p. 244–254, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5001. Acesso em: 6 dec. 2025.