@article{JTNB_1994__6_2_261_0,
     author = {Lemmermeyer, Franz},
     title = {On $2$-class field towers of imaginary quadratic number fields},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {261--272},
     publisher = {Universit\'e Bordeaux I},
     volume = {6},
     number = {2},
     year = {1994},
     mrnumber = {1360645},
     zbl = {0826.11052},
     language = {en},
     url = {http://www.numdam.org/item/JTNB_1994__6_2_261_0/}
}