TY  - JOUR
AU  - M. P. Grigolia
TI  - A modified characteristic problem for hyperbolic systems with singularities
JO  - Differencialʹnye uravneniâ
PY  - 1982
SP  - 1005
EP  - 1014
VL  - 18
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1982_18_6_a9/
LA  - ru
ID  - DE_1982_18_6_a9
ER  -