TY - JOUR AU - Cacciari, Leo TI - On the automorphism group of a toroidal hypermap JO - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications PY - 1992 SP - 523 EP - 540 VL - 26 IS - 6 PB - EDP-Sciences UR - http://www.numdam.org/item/ITA_1992__26_6_523_0/ LA - en ID - ITA_1992__26_6_523_0 ER -