%0 Journal Article %A L. D. Zamkobaya %T On a method of ``freezing'' for discrete systems %J Differencialʹnye uravneniâ %D 1980 %P 697-704 %V 16 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_4_a11/ %G ru %F DE_1980_16_4_a11