\documentclass[11pt,a4paper]{article}
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\usepackage[francais]{babel}
\usepackage{fancyhdr}
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\fancyhf{}
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\fancyfoot[C]{\textbf{Workshop on the Multiphysics Behavior of Rubber} - nov 30 - dec 1, 2017, Marseille, France} 
\setlength{\parindent}{0pt} 
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\makeatletter
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\title{Abstract Title}
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\author{\underline{S. Lejeunes (underline the speaker)}$^1$, D. Eyheramendy$^{1,2}$, G. Machado$^{1,3}$}
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\address{%
$^1$ LMA, CNRS, France, lejeunes@lma.cnrs-mrs.fr\\
$^2$ Ecole Centrale Marseille, France, dominique.eyheramendy@centrale-marseille.fr\\
$^3$ Aix Marseille Université, France, machado@lma.cnrs-mrs.fr
}

\begin{document}
\date{}
\maketitle

\section{Instructions}
Abstract must be maximum two pages long and authors should at least complete an entire page.\\
Figure should be centered and referenced in the text (see figure \ref{fig1})  \\
Reference should follow the following style: \cite{article,book} \\
\begin{figure}[!h]
\center
\includegraphics[width=0.5\textwidth]{image_aramis}
\caption{Centered figure}\label{fig1}
\end{figure}

\begin{thebibliography}{2}
   \bibitem{article} Last Name, F. \& Last Name, F.; \textbf{title}; \textit{journal}; 40; 202-250, (2012)
   \bibitem{book} Last Name, F.; \textbf{title}; \textit{editor}; (2010)
\end{thebibliography}
\end{document}
