%0 Journal Article %A Yu. A. Dubinskii %T On a periodic problem for nonlinear ``elliptic'' equations with %J Doklady Akademii Nauk %D 1993 %P 148-150 %V 330 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1993_330_2_a4/ %G ru %F DAN_1993_330_2_a4