%0 Journal Article %A N. N. Nefëdov %A A. G. Nikitin %T Development of the asymptotic method of differential inequalities for step-type solutions of singularly perturbed integro-differential equations %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 2001 %P 1057-1066 %V 41 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_2001_41_7_a4/ %G ru %F ZVMMF_2001_41_7_a4