%0 Journal Article %A V. V. Sobolev %T The spectrum of a planet with two-layer atmosphere %J Doklady Akademii Nauk %D 1973 %P 63-66 %V 211 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_211_1_a14/ %G ru %F DAN_1973_211_1_a14