@article{DE_1986_22_5_a22,
     author = {Yu. L. Gaponenko},
     title = {On the boundedness of the solution of a second-order linear equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {890--891},
     publisher = {mathdoc},
     volume = {22},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_5_a22/}
}