Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1992_28_9_a26, author = {V. A. Strizhkov}, title = {A criterion for solvability in the large of singularly perturbed nonlinear problems}, journal = {Differencialʹnye uravneni\^a}, pages = {1644--1646}, publisher = {mathdoc}, volume = {28}, number = {9}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1992_28_9_a26/} }
V. A. Strizhkov. A criterion for solvability in the large of singularly perturbed nonlinear problems. Differencialʹnye uravneniâ, Tome 28 (1992) no. 9, pp. 1644-1646. http://geodesic.mathdoc.fr/item/DE_1992_28_9_a26/