TY  - JOUR
AU  - F. E. Lomovtsev
TI  - Second-order hyperbolic differential equations with discontinuous operator coefficients
JO  - Differencialʹnye uravneniâ
PY  - 1997
SP  - 1394
EP  - 1403
VL  - 33
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1997_33_10_a12/
LA  - ru
ID  - DE_1997_33_10_a12
ER  -