@article{DE_1977_13_2_a20,
     author = {G. I. Shishkin},
     title = {The first boundary value problem for a second order equation with small parameters multiplying the derivatives},
     journal = {Differencialʹnye uravneni\^a},
     pages = {376--378},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_2_a20/}
}