@article{1103841072,
author = {Berzi, V.},
title = {General theorems on the combination of relativistic and internal symmetries},
journal = {Comm. Math. Phys.},
volume = {7},
number = {1},
year = {1968},
pages = { 217-230},
language = {en},
url = {http://dml.mathdoc.fr/item/1103841072}
}
Berzi, V. General theorems on the combination of relativistic and internal symmetries. Comm. Math. Phys., Tome 7 (1968) no. 1, pp. 217-230. http://gdmltest.u-ga.fr/item/1103841072/