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\title{Symbolic and Numerical Computations\\
       for Mathematical Geodesy Problem Solving}

\author{
        {Mara Daskalova}
        \vspace*{2.4 mm}\\
        {University  of   Architecture,   Construction  and Geodesy}\\
        {Hr. Smirnenski Blvd., 1, \ 1100 Sofia,\ Bulgaria}
        \and
        {Margarita Spiridonova ${ }^{*}$ }
        \vspace*{2.4 mm}\\
        {Institute of Mathematics and Informatics,}\\
        {Bulgarian Academy of Sciences}\\
        {Acad. G. Bonchev Str., Bl. 8, 1113 Sofia, Bulgaria}\\
        {e-mail: mspirid@math.bas.bg}
        \vspace*{2.mm}
       }


\date{}

\begin{document}

\maketitle


This is an example of abstract for the contribution talks to the
ALCCAL'2000 Summer School.\\


The coauthor who presents the talk is indicated with the sign *.
This sign is redundant in case of one author.\\


Text of the abstract should not exceed  2 pages (with the Reference
part).\\

Citation of references: [1], [2], [3],[4].


% Part of the References.
\begin{flushleft}
{\bf References}
\end{flushleft}

\begin{enumerate}

% A book:
\item
Ph. Ciarlet. The Finite Elementh Method for Elliptic Problems,
North Holland, Amsterdam, 1978.
% A paper in a journal:
\item
R. Devaney. Homoclinic Orbits in Hamiltonian Systems,
J. Diff. Eq., {\bf 21} (1976), 431-438.
% A paper in a book or Proceedings:
\item
A. Ivanov. Main Features of the Computer Algebra System ABCDEF,
In: H. Miller (Ed.). Scientific Computation, Boole Press, 2000, 170-185.
% Web Address:
\item
Internet web-page of {\it DERIVE}:

$ http://www.derive.com $
\end{enumerate}

\end{document}