@article{DE_1969_5_9_a11,
     author = {N. Z. Gabbasov and E. S. Chichkin},
     title = {A certain integral formula for the solution of ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1652--1662},
     publisher = {mathdoc},
     volume = {5},
     number = {9},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_9_a11/}
}