%0 Journal Article %A N. S. Bakhvalov %T Parabolic systems with small parameters in the higher derivatives %J Doklady Akademii Nauk %D 1967 %P 263-266 %V 174 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_174_2_a0/ %G ru %F DAN_1967_174_2_a0