\documentclass[12pt, a4]{article}
\usepackage{times,mathptmx}
\usepackage[latin1]{inputenc}
\usepackage{t1enc}
\usepackage{amsmath,amssymb}
\usepackage[pdftex]{graphicx}

\begin{document}

\pagestyle{empty}

\begin{center}
{\Large\bf 
Title of the presentation
}
\\ \vspace {2mm}

\medskip
{\sc 
A. Author$^{1}$, B. Author$^{1,2}$, C. Author$^{2}$
}\\ \vspace{3mm}  
$^{1}$ Institute 1, Address 1\\
$^{2}$ Institute 2, Address 2\\
email address of presenting author 
\\  \vspace{3mm}

\end{center}
\vspace{10mm}
Main text of your abstract. Total length should be at most one page.


A list of references is optional but not compulsory. Examples for the style are:

\begin{thebibliography}{99} \setlength{\itemsep}{0pt}

\bibitem{acs} {\sc Cuisenaire, O.} (2006). Locally adaptable mathematical morphology using distance transformations. {\em Pattern Recogn.} {\bf 39,} 405--416.

\bibitem{skm} {\sc Stoyan, D., Kendall, W.~S., and Mecke, J.} (1995). {\em Stochastic Geometry and its Applications.} Wiley, Chichester.

\bibitem{GroYe} {\sc Gross, J.~L. and Yellen, J.} (eds.) (2004). {\em Handbook of Graph Theory.} CRC Press, Boca Raton, London, New York, Washington.

\end{thebibliography}
\end{document}