TY - JOUR AU - Soogil Seo TI - Cohomology groups of the class groups over a $\Bbb Z_p$ extension JO - Acta Arithmetica PY - 2005 SP - 337 EP - 348 VL - 120 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa120-4-2/ DO - 10.4064/aa120-4-2 LA - en ID - 10_4064_aa120_4_2 ER -