%0 Journal Article %A M. V. Karasev %A V. P. Maslov %A A. V. Pereskokov %T Resonance frequencies of valves in optic media with spatial %J Doklady Akademii Nauk %D 1985 %P 1085-1088 %V 281 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1985_281_5_a15/ %G ru %F DAN_1985_281_5_a15