@article{ZVMMF_2002_42_5_a5,
     author = {R. N. Garifullin},
     title = {Perturbation of a differential equation with discontinuities},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {665--675},
     publisher = {mathdoc},
     volume = {42},
     number = {5},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2002_42_5_a5/}
}