Asymptotic behavior of eigenvalues and eigenfunctions of the Steklov problem in a thick periodic junction. Neliniini Kolyvannya, [S. l.], v. 4, n. 1, p. 91–105, 2001. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/157. Acesso em: 12 apr. 2026.