\begin{thebibliography}{99}
\bibitem{pst-user} pst-user.pdf  \hspace{1cm}   version 1.51  \hspace{1cm}      131 pages  \hspace{1cm}         \DGB
%\bibitem{pstricks} pstricks-doc.pdf  \hspace{1cm}      version 97  \hspace{1cm}        338 pages  \hspace{1cm}         \DGB
%\bibitem{pst-add}
\bibitem{pstricks-add}    pstricks-add-doc.pdf  \hspace{1cm}    version 3.61 \hspace{1cm}       134 pages       \hspace{1cm}    \DGB
\bibitem{pst-3dplot} pst-3dplot-doc.pdf  \hspace{1cm}   version 1.94 \hspace{1cm}       69 pages \hspace{1cm}   \DGB
\bibitem{pst-bezier} pst-bezier-doc.pdf  \hspace{1cm}   version 0.01 \hspace{1cm}       10 pages        \hspace{1cm}    \DGB
\bibitem{pst-coil} pst-coil-doc.pdf  \hspace{1cm}       version 1.06 \hspace{1cm}       14 pages        \hspace{1cm}    \DGB
\bibitem{pst-eucl} pst-eucl-doc.pdf \hspace{1cm}        version 1.51 \hspace{1cm}       52 pages        \hspace{1cm}    \DGB
\bibitem{pst-fill} pst-fill.pdf     \hspace{1cm}        version 1.00 \hspace{1cm}       37 pages        \hspace{1cm}    \DGB
\bibitem{pst-fr3d} pst-fr3d.pdf   \hspace{1cm}  version 1.00 \hspace{1cm}       10 pages        \hspace{1cm}    \DGB
\bibitem{pst-fun} pst-fun-doc.pdf   \hspace{1cm}        version 0.04 \hspace{1cm}       11 pages        \hspace{1cm}    \DGB
\bibitem{pst-func} pst-func-doc.pdf   \hspace{1cm}      version 0.81 \hspace{1cm}       73 pages        \hspace{1cm}    \DGB
\bibitem{pst-grad} pst-grad-doc.pdf \hspace{1cm}        version 1.06 \hspace{1cm}       11 pages        \hspace{1cm}    \DGB
\bibitem{pst-infix} pst-infixplot.pdf  \hspace{1cm}     version 0.11 \hspace{1cm}       2 pages         \hspace{1cm}    \DGB
\bibitem{pst-news05} pst-news05.pdf      \hspace{1cm}   11 pages        \hspace{1cm}    \DGB
\bibitem{pst-news08} pst-news08.pdf     \hspace{1cm}    30 pages        \hspace{1cm}    \DGB
\bibitem{pst-news10} pst-news10.pdf \hspace{1cm}        28 pages        \hspace{1cm}    \DGB
\bibitem{pst-news13} pst-news10.pdf \hspace{1cm}        9 pages         \hspace{1cm}    \DGB
\bibitem{pst-node} pst-node-doc.pdf  \hspace{1cm}       version 1.30 :  53 pages        \hspace{1cm}    \DGB
\bibitem{pst-plot} pst-plot-doc.pdf  \hspace{1cm}       version 1.40 :  92 pages        \hspace{1cm}    \DGB
\bibitem{pst-poly} pst-poly-doc.pdf  \hspace{1cm}       version 1.61 :  22 pages        \hspace{1cm}    \DGB
\bibitem{pst-slpe} pst-slpe.pdf   \hspace{1cm}  version 1.31 \hspace{1cm}       16 pages        \hspace{1cm}    \DGB
\bibitem{pst-sol3d} pst-solides3d-doc.pdf   \hspace{1cm}        version v. 4.24 \hspace{1cm}    197 pages       \hspace{1cm}    \DGB
\bibitem{pst-text} pst-text-doc.pdf   \hspace{1cm}      version 1.06\hspace{1cm}        11 pages        \hspace{1cm}    \DGB
\bibitem{pst-tree} pst-tree-doc.pdf   \hspace{1cm}      version 1.12\hspace{1cm}        24 pages        \hspace{1cm}    \DGB
\bibitem{multido} multido-doc.pdf   \hspace{1cm}        version 1.42\hspace{1cm}        4 pages         \hspace{1cm}    \DGB
\bibitem{xcolor} xcolor.pdf             \hspace{1cm}    version 2.11 \hspace{1cm}       65 pages        \hspace{1cm}    \DGB
\bibitem{anim} animate.pdf      \hspace{1cm}    6th December 2012 \hspace{1cm}  23 pages \hspace{1cm}   \DGB
\end{thebibliography}