TY - JOUR AU - Yasushi Mizusawa TI - On the maximal unramified pro-2-extension of $\mathbb {Z}_2$-extensions of certain real quadratic fields II JO - Acta Arithmetica PY - 2005 SP - 93 EP - 107 VL - 119 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa119-1-7/ DO - 10.4064/aa119-1-7 LA - en ID - 10_4064_aa119_1_7 ER -