%0 Journal Article %A E. G. D'yakonov %T Regular Perturbations of Nonstationary Problems of Mathematical Physics Related to Linear Constraints: I %J Differencialʹnye uravneniâ %D 2001 %P 55-65 %V 37 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2001_37_1_a7/ %G ru %F DE_2001_37_1_a7