@article{DE_1987_23_10_a2,
     author = {S. G. Krechetov},
     title = {Estimates for the solutions of a second-order differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1679--1684},
     publisher = {mathdoc},
     volume = {23},
     number = {10},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_10_a2/}
}