\documentclass[a4paper,10pt]{article}

\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage[english,french]{babel}
\usepackage{xspace}
\usepackage{graphicx}
\usepackage{float}
\usepackage{graphics}
\usepackage{color}
\usepackage{enumerate}
\usepackage{amscd}
\usepackage{dsfont}
\usepackage{amsfonts,amsmath,amsthm,amssymb,stmaryrd}
\usepackage{shapepar,multicol}
\usepackage{listings}
\usepackage{times}
\usepackage{algorithmic}
\usepackage{algorithm}
\usepackage{url}
\usepackage{eurosym}
\usepackage{microtype}

\begin{document}
%\section{Section 1}

\nocite{*}
\bibliographystyle{plain}
\bibliography{biblio}
\end{document} 