\begin{thebibliography}{1}

\bibitem{ESC}
Heikki Apiola, Marko Laine, and Pirkka Peltola.
\newblock {\em {Unix ESC Introductory Guide}}.
\newblock Computing Centre, University of Helsinki, 1993.

\bibitem{beardon83}
Alan~F. Beardon.
\newblock {\em {The Geometry of Discrete Groups}}.
\newblock Springer, 1983.
\newblock Graduate Texts in Mathematics 91.

\bibitem{tlpmat}
Juha Haataja and Jussi Rahola, editors.
\newblock {\em {Matemaattiset ohjelmistot}}.
\newblock CSC-Tieteellinen laskenta Oy, 1993.
\newblock 2nd edition. In Finnish.

\bibitem{marjatta81}
Troels J{\o}rgensen and Marjatta N{\"a}{\"a}t{\"a}nen.
\newblock Surfaces of genus 2: Generic fundamental polygons.
\newblock {\em Quart. J. Math. Oxford}, 33(2):451--461, 1982.

\bibitem{mathprog}
Roman Maeder.
\newblock {\em {Programming in Mathematica}}.
\newblock Addison-Wesley, 1990.

\bibitem{marjatta85}
Marjatta N{\"a}{\"a}t{\"a}nen.
\newblock On the stability of identification patterns for {Dirichlet} regions.
\newblock {\em Annales Academi{\ae} Scientiarum Fennic{\ae}, Series A I
  Mathematica}, 10:411--417, 1985.

\bibitem{marjatta93}
Marjatta N{\"a}{\"a}t{\"a}nen.
\newblock A cellular parametrization for closed surfaces with a distinguished
  point.
\newblock {\em Annales Academi{\ae} Scientiarum Fennic{\ae}, Series A I
  Mathematica}, 18:45--64, 1993.

\bibitem{riemannsurf}
Mika Sepp{\"a}l{\"a}.
\newblock {Computational Problems in the Theory of Riemann Surfaces and
  Algebraic Curves}.
\newblock {\em CSC News}, 4(4):6--7, 1992.

\bibitem{mseppala92}
Mika Sepp{\"a}l{\"a} and Tuomas Sorvali.
\newblock {\em {Geometry of Riemann Surfaces and Teichm{\"u}ller Spaces}}.
\newblock North-Holland, 1992.
\newblock Mathematics Studies 169.

\end{thebibliography}
