Imaginary quadratic fields with Cl2(k) = (2,2,2), by E. Benjamin, F. Lemmermeyer, C. Snyder
In this article we classify the complex quadratic
number fields k with 2-class group of type (2,2,2) whose
Hilbert 2-class fields have a 2-class group of rank 2, and
then determine the length of their 2-class field towers.
E. Benjamin, F. Lemmermeyer, C. Snyder <email@example.com>