@article{1103840327, author = {Joos, H. and Schrader, R.}, title = {On the primitive characters of the Poincar\'e group}, journal = {Comm. Math. Phys.}, volume = {7}, number = {1}, year = {1968}, pages = { 21-50}, language = {en}, url = {http://dml.mathdoc.fr/item/1103840327} }
Joos, H.; Schrader, R. On the primitive characters of the Poincaré group. Comm. Math. Phys., Tome 7 (1968) no. 1, pp. 21-50. http://gdmltest.u-ga.fr/item/1103840327/