Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1990_26_10_a25, author = {A. P. Soldatov}, title = {A {Riemann} contact problem}, journal = {Differencialʹnye uravneni\^a}, pages = {1828--1830}, publisher = {mathdoc}, volume = {26}, number = {10}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1990_26_10_a25/} }
A. P. Soldatov. A Riemann contact problem. Differencialʹnye uravneniâ, Tome 26 (1990) no. 10, pp. 1828-1830. http://geodesic.mathdoc.fr/item/DE_1990_26_10_a25/