TY  - JOUR
AU  - A. V. Zhiber
AU  - Yu. G. Mikhailova
TI  - On hyperbolic systems of equations with zero generalized Laplace invariants
JO  - Trudy Instituta matematiki i mehaniki
PY  - 2007
SP  - 74
EP  - 83
VL  - 13
IS  - 4
UR  - http://geodesic.mathdoc.fr/item/TIMM_2007_13_4_a6/
LA  - ru
ID  - TIMM_2007_13_4_a6
ER  -