@article{DE_2002_38_7_a21,
     author = {A. N. Naimov},
     title = {Estimating {Derivatives} of {Solutions} for a {Family} of {Singularly} {Perturbed} {Boundary} {Value} {Problems}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {994},
     publisher = {mathdoc},
     volume = {38},
     number = {7},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_7_a21/}
}