%0 Journal Article %A A. M. Krasnosel'skii %T Forced oscillations in systems with hysteresis nonlinearities %J Doklady Akademii Nauk %D 1987 %P 1078-1082 %V 292 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_292_5_a11/ %G ru %F DAN_1987_292_5_a11