@article{1103839942,
author = {Alonso, J. L. and Yndur\aa in, F. J.},
title = {On the continuity of causal automorphisms of space-time},
journal = {Comm. Math. Phys.},
volume = {4},
number = {1},
year = {1967},
pages = { 349-351},
language = {en},
url = {http://dml.mathdoc.fr/item/1103839942}
}
Alonso, J. L.; Ynduråin, F. J. On the continuity of causal automorphisms of space-time. Comm. Math. Phys., Tome 4 (1967) no. 1, pp. 349-351. http://gdmltest.u-ga.fr/item/1103839942/