TY  - JOUR
AU  - F. E. Lomovtsev
TI  - Necessary and sufficient conditions for the unique solvability of the Cauchy problem for second-order hyperbolic differential equations with a variable domain of operator coefficients
JO  - Differencialʹnye uravneniâ
PY  - 1992
SP  - 873
EP  - 886
VL  - 28
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1992_28_5_a17/
LA  - ru
ID  - DE_1992_28_5_a17
ER  -