@article{GDZPPN002204851, title = {The genus of PSl2 (q).}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {374}, year = {1987}, pages = {59-86}, zbl = {0613.57019}, url = {http://dml.mathdoc.fr/item/GDZPPN002204851} }
Sjerve, Denis; Glover, Henry. The genus of PSl2 (q).. Journal für die reine und angewandte Mathematik, Tome 374 (1987) pp. 59-86. http://gdmltest.u-ga.fr/item/GDZPPN002204851/