\usepackage{isolatin1}
\usepackage{times}
\usepackage{helvet}

\pagestyle{empty}
\renewcommand{\baselinestretch}{0.95}
\marginparwidth 0pt 
\evensidemargin -0.3cm 
\oddsidemargin -0.3cm 
\topmargin -1.3cm 
\textwidth 16.5cm 
\textheight 24.5cm

\newcommand{\auteur}[1]{
	\begin{center}
	{#1}
	\end{center}
}

\newcommand{\titre}[1]{
	\begin{center}
	{\large\bfseries \sffamily {#1}}
	\end{center}
}

\newcommand{\affiliation}[1]{
	\noindent
	{\small{#1}}
}
