%0 Journal Article %A A. I. Leonov %A Yu. Z. Miropol'skii %T On the instability of weakly nonlinear internal gravitational waves in an unbounded stratified liquid %J Doklady Akademii Nauk %D 1975 %P 68-71 %V 222 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_222_1_a13/ %G ru %F DAN_1975_222_1_a13