%0 Journal Article %A A. K. Vidybida %T Periodic action-induced modification of the potential function of %J Doklady Akademii Nauk %D 1987 %P 1341-1345 %V 292 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_292_6_a14/ %G ru %F DAN_1987_292_6_a14