TY  - JOUR
AU  - Alexandrov, A. D.
TI  - A Contribution to Chronogeometry
JO  - Canadian journal of mathematics
PY  - 1967
SP  - 1119
EP  - 1128
VL  - 19
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-102-6/
DO  - 10.4153/CJM-1967-102-6
ID  - 10_4153_CJM_1967_102_6
ER  -