\begin{thebibliography}{xx}


\bibitem[CDI]{CDI} \ \\
  \href{https://code.zmaw.de/projects/cdi}
       {Climate Data Interface},
  from the
  \href{http://www.mpimet.mpg.de}
       {Max Planck Institute for Meteorologie}


\bibitem[CDO]{CDO} \ \\
  \href{https://code.zmaw.de/projects/cdo}
       {Climate Data Operators},
  from the
  \href{http://www.mpimet.mpg.de}
       {Max Planck Institute for Meteorologie}


\bibitem[Magics]{Magics} \ \\
  \href{https://software.ecmwf.int/wiki/display/MAGP/Magics}
       {Magics Software Package},
  from the
  \href{https://www.ecmwf.int}
       {European Centre for Medium-Range Weather Forecasts (ECMWF)}


\end{thebibliography}
