TY - JOUR AU - Ryotaro Okazaki TI - Inclusion of CM-fields and divisibility ofrelative class numbers JO - Acta Arithmetica PY - 2000 SP - 319 EP - 338 VL - 92 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa-92-4-319-338/ DO - 10.4064/aa-92-4-319-338 LA - en ID - 10_4064_aa_92_4_319_338 ER -