\begin{thebibliography}{EHN11}

\bibitem[Coh93]{Coh93}
Henri Cohen.
\newblock {\em A course in computational algebraic number theory}.
\newblock Springer-Verlag, New York, Heidelberg, Berlin, 1993.

\bibitem[EHN11]{Polycyclic}
Bettina Eick, Max Horn, and Werner Nickel.
\newblock {\em Polycyclic - a {GAP} package}, 2011.
\newblock \URL{https://gap-packages.github.io/polycyclic/}.

\bibitem[PAR11]{PARI2}
{The PARI~Group}, Bordeaux.
\newblock {\em {PARI/GP, version {\tt 2.5.0}}}, 2011.
\newblock available from \URL{https://pari.math.u-bordeaux.fr/}.

\bibitem[Poh93]{Poh93}
Michael~E. Pohst.
\newblock {\em Computational Algebraic Number Theory}, volume~21 of {\em DMV
  Seminar}.
\newblock Birk\"auser, 1993.

\bibitem[PZ89]{PZa89}
M.~Pohst and H.~Zassenhaus.
\newblock {\em Algorithmic algebraic number theory}.
\newblock Cambridge University Press, 1989.

\bibitem[ST79]{Sta79}
I.~N. Stuart and D.~O. Tall.
\newblock {\em Algebraic number theory}.
\newblock Chapman and Hall, 1979.

\end{thebibliography}
