%0 Journal Article %A V. I. Yudovich %T Periodic motions of a viscous incompressible fluid %J Doklady Akademii Nauk %D 1960 %P 1214-1217 %V 130 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_130_6_a9/ %G ru %F DAN_1960_130_6_a9