TY  - JOUR
AU  - Catalano, Fabio
TI  - Null Condition for Semilinear Wave Equation with Variable Coefficients
JO  - Serdica Mathematical Journal
PY  - 1999
SP  - 321
EP  - 340
VL  - 25
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SMJ2_1999_25_4_a4/
LA  - en
ID  - SMJ2_1999_25_4_a4
ER  -