@article{1103841727,
author = {\L opusza\'nski, Jan T.},
title = {Physical symmetries in a theory of several scalar real fields},
journal = {Comm. Math. Phys.},
volume = {12},
number = {1},
year = {1969},
pages = { 158-164},
language = {en},
url = {http://dml.mathdoc.fr/item/1103841727}
}
Łopuszański, Jan T. Physical symmetries in a theory of several scalar real fields. Comm. Math. Phys., Tome 12 (1969) no. 1, pp. 158-164. http://gdmltest.u-ga.fr/item/1103841727/