TY  - JOUR
AU  - V. N. Aref'ev
TI  - Smoothness of solutions of second-order hyperbolic equations with discontinuous coefficients
JO  - Matematičeskie zametki
PY  - 1991
SP  - 3
EP  - 11
VL  - 49
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1991_49_6_a0/
LA  - ru
ID  - MZM_1991_49_6_a0
ER  -