@article{DE_1971_7_12_a0,
     author = {V. V. Amel'kin and I. V. Gaishun},
     title = {Some properties of the solutions of a certain second order equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2131--2135},
     publisher = {mathdoc},
     volume = {7},
     number = {12},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_12_a0/}
}