%0 Journal Article %A Mizusawa, Yasushi %T On metabelian 2-class field towers over $\mathbb Z_2$-extensions of real quadratic fields %J Canadian mathematical bulletin %D 2022 %P 795-805 %V 65 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008439521000862/ %R 10.4153/S0008439521000862 %F 10_4153_S0008439521000862