my tex template

\documentclass{article}
\usepackage{amsfonts}
\usepackage{times,marvosym,url,thumbpdf}
\usepackage{amsmath}
\usepackage{graphicx}
\setlength{\textwidth}{15cm}
\setlength{\topmargin}{1cm}
\setlength{\textheight}{22cm}
\setlength{\headsep}{.4cm}
\setlength{\oddsidemargin}{0.3cm}
\setlength{\evensidemargin}{0.3cm}
\pagestyle{headings}
\begin{document}
\title{Template}
\author{Hao Chai}
\pagenumbering{Roman}
\maketitle
\section*{}
\subsection*{}
\bibliographystyle{h-physrev3}
\bibliography{chai}
\end{document}