Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1971_7_10_a21, author = {A. V. Finkelstein}, title = {The existence and uniqueness of the solution of a certain boundary value problem}, journal = {Differencialʹnye uravneni\^a}, pages = {1918--1921}, publisher = {mathdoc}, volume = {7}, number = {10}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_10_a21/} }
A. V. Finkelstein. The existence and uniqueness of the solution of a certain boundary value problem. Differencialʹnye uravneniâ, Tome 7 (1971) no. 10, pp. 1918-1921. http://geodesic.mathdoc.fr/item/DE_1971_7_10_a21/