@article{DE_1987_23_2_a2,
     author = {V. D. Budaev},
     title = {An estimate for the modulus of the derivative of a regular solution of an ordinary linear differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {198--204},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_2_a2/}
}