Asymptotic expansions for eigenfunctions and eigenvalues of a Steklov spectral problem for thin perforated domains with rapidly varying thickness and different boundary dimensions. НК [Internet]. 2016 Jun. 29 [cited 2025 Dec. 8];19(2):253-75. Available from: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/829