Asymptotic expansions for eigenfunctions and eigenvalues of a Steklov spectral problem for thin perforated domains with rapidly varying thickness and different boundary dimensions. Neliniini Kolyvannya, [S. l.], v. 19, n. 2, p. 253–275, 2016. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/829. Acesso em: 8 dec. 2025.