TY  - JOUR
AU  - L. A. Kalyakin
TI  - Construction of an asymptotic expansion of the solution of a hyperbolic equation with a weakly nonlinear perturbation
JO  - Differencialʹnye uravneniâ
PY  - 1983
SP  - 1991
EP  - 1992
VL  - 19
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1983_19_11_a23/
LA  - ru
ID  - DE_1983_19_11_a23
ER  -