%0 Journal Article %A M. S. Saburov %T Passage to the limit in singularly perturbed systems with variable %J Doklady Akademii Nauk %D 1993 %P 151-154 %V 333 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1993_333_2_a6/ %G ru %F DAN_1993_333_2_a6