TY  - JOUR
AU  - D. P. Kostomarov
TI  - An Application of the Averaging Method and Hadamard's Method of Descent to the Analysis of the Cauchy Problem for an Ultra-Hyperbolic Equation
JO  - Differencialʹnye uravneniâ
PY  - 2002
SP  - 1397
EP  - 1403
VL  - 38
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2002_38_10_a13/
LA  - ru
ID  - DE_2002_38_10_a13
ER  -