Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1976_12_3_a16, author = {V. V. Gudkov}, title = {Boundary value problems on finite and infinite intervals}, journal = {Differencialʹnye uravneni\^a}, pages = {555--557}, publisher = {mathdoc}, volume = {12}, number = {3}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1976_12_3_a16/} }
V. V. Gudkov. Boundary value problems on finite and infinite intervals. Differencialʹnye uravneniâ, Tome 12 (1976) no. 3, pp. 555-557. http://geodesic.mathdoc.fr/item/DE_1976_12_3_a16/