@article{AIHPA_1970__13_2_137_0,
     author = {Brennich, R. H.},
     title = {The irreducible ray representations of the full inhomogeneous {Galilei} group},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {137--161},
     publisher = {Gauthier-Villars},
     volume = {13},
     number = {2},
     year = {1970},
     mrnumber = {275770},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AIHPA_1970__13_2_137_0/}
}