%0 Journal Article %A G. I. Shishkin %T Approximation of solutions of singularly perturbed boundary value problems with a parabolic boundary layer %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1989 %P 963-977 %V 29 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1989_29_7_a0/ %G ru %F ZVMMF_1989_29_7_a0