TY  - JOUR
AU  - E. A. Sozontova
TI  - On solvability by quadratures conditions for second order hyperbolic systems
JO  - Ufa mathematical journal
PY  - 2016
SP  - 130
EP  - 135
VL  - 8
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/UFA_2016_8_3_a11/
LA  - en
ID  - UFA_2016_8_3_a11
ER  -