%0 Journal Article %A G. I. Shishkin %T Grid approximation of a singularly perturbed Neumann problem for parabolic equations in the case of a discontinuous boundary function %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1997 %P 378-381 %V 37 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1997_37_3_a11/ %G ru %F ZVMMF_1997_37_3_a11