Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1993_29_6_a19, author = {V. I. Gromak}, title = {B\"acklund transformations of nonlinear equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1067--1068}, publisher = {mathdoc}, volume = {29}, number = {6}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1993_29_6_a19/} }
V. I. Gromak. B\"acklund transformations of nonlinear equations. Differencialʹnye uravneniâ, Tome 29 (1993) no. 6, pp. 1067-1068. http://geodesic.mathdoc.fr/item/DE_1993_29_6_a19/