TY - JOUR AU - Arthur W. Apter TI - Level by level equivalence and the number of normal measures over $P_{\kappa} (\lambda )$ JO - Fundamenta Mathematicae PY - 2007 SP - 253 EP - 265 VL - 194 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm194-3-3/ DO - 10.4064/fm194-3-3 LA - en ID - 10_4064_fm194_3_3 ER -