@article{1103858408,
author = {Borchers, H. J. and Hegerfeldt, G. C.},
title = {The structure of space-time transformations},
journal = {Comm. Math. Phys.},
volume = {24},
number = {2},
year = {1972},
pages = { 259-266},
language = {en},
url = {http://dml.mathdoc.fr/item/1103858408}
}
Borchers, H. J.; Hegerfeldt, G. C. The structure of space-time transformations. Comm. Math. Phys., Tome 24 (1972) no. 2, pp. 259-266. http://gdmltest.u-ga.fr/item/1103858408/