\documentclass[11pt,a4paper]{article}

\usepackage{epsfig}

\usepackage{url}

\usepackage{color}

\usepackage{hyperref}

\title{Title}
%
\author{\Large Author 1$^1$, \underline{Author 2}$^2$, Author 3$^3$\\
\\
$^1$ Affiliation 1, e.g. University of XXX\\
$^2$ Affiliation 2, e.g. University of YYY\\
$^3$ Affiliation 3, e.g. University of ZZZ\\
\texttt{e-mail1, email2, email3}}
\date{}

\begin{document}

\maketitle

Put the abstract here. It should be no more than one page including the references.



\begin{thebibliography}{99}

\bibitem{ref1} Reference1

\bibitem{ref2} Reference2
 
\end{thebibliography}

\end{document}

