%0 Journal Article %A Yu. A. Mitropol'skii %A V. L. Kulik %A A. I. Skrypnyk %T Investigation of invariant toroidal manifolds of dynamical systems, and questions of automation of methods for investigating differential equations %J Differencialʹnye uravneniâ %D 1985 %P 1679-1692 %V 21 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_10_a3/ %G ru %F DE_1985_21_10_a3