%0 Journal Article %A P. N. Zhevandrov %A A. E. Merzon %T Stability of entrained surface waves under small perturbations of the density of the upper layer %J Matematičeskie zametki %D 1998 %P 943-946 %V 64 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1998_64_6_a14/ %G ru %F MZM_1998_64_6_a14