\documentclass[a4page]{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{latexsym}

\begin{document}
\title{Title of presentation}

\author{Author or Authors (first author is the speaker)   \footnote{ Affiliation }}
\date{}
\maketitle

\begin{center} {\Large {\bf Abstract}} \end{center}
Write your abstract here, pleas note that the whole document should not be longer than one page.



%\section{Sectiontitle}

\begin{thebibliography}{00}

\bibitem{first} First reference
\end{thebibliography}
\end{document}
