TY - JOUR AU - Wilbur Jónsson TI - On the Mathieu Groups M22, M23, M24 and the Uniqueness of the Associated Steiner Systems. JO - Mathematische Zeitschrift PY - 1972 SP - 193 EP - 214 VL - 125 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1972__125_171702/ ID - MZ_1972__125_171702 ER -