Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1979_15_3_a11, author = {V. K. Romanko}, title = {Three-point boundary value problems for equations with discontinuous coefficients}, journal = {Differencialʹnye uravneni\^a}, pages = {479--491}, publisher = {mathdoc}, volume = {15}, number = {3}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_3_a11/} }
V. K. Romanko. Three-point boundary value problems for equations with discontinuous coefficients. Differencialʹnye uravneniâ, Tome 15 (1979) no. 3, pp. 479-491. http://geodesic.mathdoc.fr/item/DE_1979_15_3_a11/