@article{ZVMMF_1987_27_7_a13,
     author = {A. L. Zheleznyak and V. R. Kogan},
     title = {A method for solving a class of singularly perturbed boundary value problems},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1095--1100},
     publisher = {mathdoc},
     volume = {27},
     number = {7},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1987_27_7_a13/}
}