Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1989_25_10_a20, author = {S. V. Zhestkov}, title = {On periodic solutions of nonlinear hyperbolic systems in a strip}, journal = {Differencialʹnye uravneni\^a}, pages = {1806--1807}, publisher = {mathdoc}, volume = {25}, number = {10}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_10_a20/} }
S. V. Zhestkov. On periodic solutions of nonlinear hyperbolic systems in a strip. Differencialʹnye uravneniâ, Tome 25 (1989) no. 10, pp. 1806-1807. http://geodesic.mathdoc.fr/item/DE_1989_25_10_a20/