%0 Journal Article %A G. D. Mikhailov %T Observation of acoustic spectrum components in subharmonics %J Doklady Akademii Nauk %D 1969 %P 562-563 %V 188 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_188_3_a18/ %G ru %F DAN_1969_188_3_a18