%0 Journal Article %A I. A. Finogenko %T Reduction theorems for differential equations that arise in the dynamics of systems with friction %J Differencialʹnye uravneniâ %D 1998 %P 1609-1615 %V 34 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1998_34_12_a3/ %G ru %F DE_1998_34_12_a3