%0 Journal Article %A N. I. Gavrilov %T Dynamical systems with invariant Lebesgue measure on the surface of a torus %J Differencialʹnye uravneniâ %D 1976 %P 438-445 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_3_a3/ %G ru %F DE_1976_12_3_a3