TY - JOUR AU - Halperin, Israel TI - Odd and Even Permutations JO - Canadian mathematical bulletin PY - 1960 SP - 185 EP - 186 VL - 3 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1960-023-1/ DO - 10.4153/CMB-1960-023-1 ID - 10_4153_CMB_1960_023_1 ER -