TY  - JOUR
AU  - A. V. Bitsadze
TI  - The influence of the minor terms on the correctness of the formulation of characteristic problems for hyperbolic systems of second order
JO  - Doklady Akademii Nauk
PY  - 1975
SP  - 31
EP  - 34
VL  - 225
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1975_225_1_a6/
LA  - ru
ID  - DAN_1975_225_1_a6
ER  -