%0 Journal Article %A T. A. Mel'nik %A A. V. Popov %T Asymptotic analysis of boundary value and spectral problems in thin perforated regions with rapidly changing thickness and different limiting dimensions %J Sbornik. Mathematics %D 2012 %P 1169-1195 %V 203 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2012_203_8_a4/ %G en %F SM_2012_203_8_a4