%0 Journal Article %A S. A. Trushin %A M. M. Khapaev %A G. V. Sholin %T Investigation of singularly perturbed equations that describe %J Doklady Akademii Nauk %D 1988 %P 74-77 %V 303 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_303_1_a16/ %G ru %F DAN_1988_303_1_a16