%0 Journal Article %A V. P. Sigorskii %A L. S. Sitnikov %A L. L. Utyakov %T The synthesis of elements with many stable states based on a non-linear four-pole having a non-monotonic amplitude characteristic %J Doklady Akademii Nauk %D 1964 %P 1280-1283 %V 159 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_159_6_a22/ %G ru %F DAN_1964_159_6_a22