TY  - JOUR
AU  - J.A. Lester
TI  - Transformations of Robertson-Walker spacetimes preserving separation zero.
JO  - Aequationes mathematicae
PY  - 1982
SP  - 216
EP  - 232
VL  - 25
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1982__25_136965/
ID  - AM2_1982__25_136965
ER  -