%0 Journal Article %A A. D. Lyashko %A E. M. Fedotov %T Error estimates for projection-difference schemes for degenerate nonstationary equations %J Differencialʹnye uravneniâ %D 2006 %P 951-955 %V 42 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2006_42_7_a9/ %G ru %F DE_2006_42_7_a9