Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1971_7_12_a19, author = {I. V. Kamenev}, title = {A remark on the existence of an unbounded solution of a second order linear equation}, journal = {Differencialʹnye uravneni\^a}, pages = {2275}, publisher = {mathdoc}, volume = {7}, number = {12}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_12_a19/} }
I. V. Kamenev. A remark on the existence of an unbounded solution of a second order linear equation. Differencialʹnye uravneniâ, Tome 7 (1971) no. 12. http://geodesic.mathdoc.fr/item/DE_1971_7_12_a19/