TY - JOUR AU - Suleiman, Ibrahim A.I. AU - Wilson, Robert A. TI - Construction of the fourfold cover of the Mathieu group . JO - Experimental mathematics PY - 1993 SP - 11 EP - 14 VL - 2 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EXMA_1993__2_1_228443/ LA - en ID - EXMA_1993__2_1_228443 ER -