Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1985_21_1_a22, author = {V. S. Vinogradov}, title = {A boundary value problem for pseudosymmetric systems}, journal = {Differencialʹnye uravneni\^a}, pages = {161--163}, publisher = {mathdoc}, volume = {21}, number = {1}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1985_21_1_a22/} }
V. S. Vinogradov. A boundary value problem for pseudosymmetric systems. Differencialʹnye uravneniâ, Tome 21 (1985) no. 1, pp. 161-163. http://geodesic.mathdoc.fr/item/DE_1985_21_1_a22/