Computation of 2-groups of narrow logarithmic divisor classes of number fields.

Jean-François Jaulent Sebastian Pauli Michael E. Pohst Florence Soriano-Gafiuk Computation of 2-groups of narrow logarithmic divisor classes of number fields. 852-863 2009 44 J. Symb. Comput. 7 http://dx.doi.org/10.1016/j.jsc.2008.04.012 db/journals/jsc/jsc44.html#JaulentPPS09