CHECHKINA, A. G.; SADOVNICHY, V. A. Degeneration of Steklov–Type Boundary Conditions in One Spectral Homogenization Problem. Eurasian Mathematical Journal, [S. l.], v. 6, n. 3, p. 13–29, 2015. Disponível em: https://emj.enu.kz/index.php/main/article/view/613. Acesso em: 18 sep. 2025.