TY  - JOUR
AU  - S. V. Zhestkov
TI  - On periodic solutions of nonlinear hyperbolic systems in a strip
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 1806
EP  - 1807
VL  - 25
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_10_a20/
LA  - ru
ID  - DE_1989_25_10_a20
ER  -