\documentclass[10pt]{article}

\usepackage{url}

\renewcommand{\title}[1]{\begin{center}{\bf \LARGE #1}\end{center}}
\newcommand{\affiliations}{\footnotesize}
\newcommand{\keywords}{\paragraph{Keywords:}}

\setlength{\oddsidemargin}{0cm} \setlength{\evensidemargin}{0cm}
\setlength{\textwidth}{16.5cm} \setlength{\topmargin}{-1cm}
\setlength{\textheight}{24.5cm}

\begin{document}
\pagestyle{empty}

\title{Title of your submission}

\begin{center}
  {\bf FistNameA LastNameA$^{1,2,*}$ , FirstNameB LastNameB$^{1,3}$}
\end{center}

\begin{affiliations}
1. Affiliation of author A and author B \par
2. Second affiliation of author A \par
3. Second affiliation of author B \par
* Contact author: email@adresse.fr
\end{affiliations}

\keywords First, Second, ... up to 5 keywords

\vskip 0.8cm

Here come the abstract of your presentation. Since it is an abstract, we propose to avoid the use of \verb£\section£ and \verb£\paragraph£. 
You can add all the packages you want (graphics, amsmath, amssymb, ...) since you will only send us the pdf file.
The document is up to one page. Do not number the page.

%%% Up to three references
\paragraph{References}
\begin{description}
\item AuthorA (2007). Title of a web ressource,\\ \url{http://url.has.to.be/on.a.separate/line/}.
\item AuthorB (2007). Title of an article. \textit{Name of the review}, 6, 13--17.
\item AuthorC (2008). Article example in proceedings, User!2008 (Dortmund, Germany), July 2008, 31--37.
\end{description}

%\nocite{ref1,ref2}
%\bibliographystyle{amsplain}
%\bibliography{biblioExample}

\end{document}