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@article{JRAM_1987__380_152959, author = {Denis Sjerve and Henry Glover}, title = {The genus of {PSl2} (q).}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {59--86}, publisher = {mathdoc}, volume = {380}, year = {1987}, zbl = {0613.57019}, url = {http://geodesic.mathdoc.fr/item/JRAM_1987__380_152959/} }
Denis Sjerve; Henry Glover. The genus of PSl2 (q).. Journal für die reine und angewandte Mathematik, Tome 380 (1987), pp. 59-86. http://geodesic.mathdoc.fr/item/JRAM_1987__380_152959/