%0 Journal Article %A S. T. Zavalishchin %T The locally integrable periodic motions of a nonlinear transmission system %J Differencialʹnye uravneniâ %D 1969 %P 1575-1582 %V 5 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_9_a3/ %G ru %F DE_1969_5_9_a3