@article{JTNB_2010__22_1_115_0,
     author = {Mizusawa, Yasushi},
     title = {On the maximal unramified pro-2-extension over the cyclotomic $\mathbb{Z}_2$-extension of an imaginary quadratic field},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {115--138},
     publisher = {Universit\'e Bordeaux 1},
     volume = {22},
     number = {1},
     year = {2010},
     doi = {10.5802/jtnb.707},
     zbl = {1221.11215},
     mrnumber = {2675876},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/jtnb.707/}
}