TY  - JOUR
AU  - A. A. Shaikh
AU  - Y. Matsuyama
TI  - Curvature Properties of Some 4-Dimensional Semi-Riemannian Metrics
JO  - Kragujevac Journal of Mathematics
PY  - 2017
SP  - 259 
VL  - 41
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KJM_2017_41_2_a6/
LA  - en
ID  - KJM_2017_41_2_a6
ER  -