@article{DE_1977_13_8_a3,
     author = {V. A. Dikarev},
     title = {The reduction to simplest form of a system of linear differential equations with a small parameter multiplying the derivative},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1384--1389},
     publisher = {mathdoc},
     volume = {13},
     number = {8},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_8_a3/}
}