@article{ZVMMF_2001_41_7_a4,
     author = {N. N. Nef\"edov and A. G. Nikitin},
     title = {Development of the asymptotic method of differential inequalities for step-type solutions of singularly perturbed integro-differential equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1057--1066},
     publisher = {mathdoc},
     volume = {41},
     number = {7},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2001_41_7_a4/}
}