@article{JRAM_1992__425_153401,
     author = {G.I. Lehrer and J. Michel and F. Digne},
     title = {The characters of the group of rational points of a reductive group with non-connected centre.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {155--192},
     publisher = {mathdoc},
     volume = {425},
     year = {1992},
     zbl = {0739.20018},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1992__425_153401/}
}