%0 Journal Article
%A Carroll, Joseph E.
%T On determining the quadratic subfields of $Z_2$-extensions of complex quadratic fields
%J Compositio Mathematica
%D 1975
%P 259-271
%V 30
%N 3
%I Noordhoff International Publishing
%U http://archive.numdam.org/item/CM_1975__30_3_259_0/
%G en
%F CM_1975__30_3_259_0