%0 Journal Article %A A. G. Kushnirenko %T An estimate from above for the entropy of a classical dynamical system %J Doklady Akademii Nauk %D 1965 %P 37-38 %V 161 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_161_1_a8/ %G ru %F DAN_1965_161_1_a8