\documentclass[a4paper]{article}
%\documentclass[a4paper,12pt]{article}
%\documentclass[a4wide]{article}
\usepackage[english]{babel}
\usepackage{amsmath, amsthm, amssymb}
\usepackage[pdftex]{graphics}
\usepackage{cite}
%\usepackage{epstopdf}
% Line spacing
\usepackage{setspace}
\onehalfspacing

\usepackage{graphicx}

% Margin specifications
\usepackage{fullpage}
\addtolength{\oddsidemargin}{.5cm}
\addtolength{\evensidemargin}{-.875in}
\addtolength{\textwidth}{-.4cm}
%\addtolength{\topmargin}{-.875in}
%\addtolength{\textheight}{1.75in}


\title{\textbf{Create a new Bibtex file}}
\author{{\bfseries Yongmann M Chung\footnote{Corresponding Author}}\\
School of Engineering and Centre for Scientific Computing,\\
University of Warwick,
Coventry, CV4 7AL, U.K.}
\date{\today}
%\date{March 2009}
\pagestyle{plain}
\begin{document}
\maketitle
\thispagestyle{empty}

\section*{Abstract}
This is to check the new bibtex file.

\textbf{Keywords:} {latex, bibtex}

\section{New bibtex file}
Cite all new references here.

\cite{Kim_etal1987,Choi_etal1994,Kim_Choi2001}.


\bibliographystyle{plain}	% by alphabetical order
%\bibliographystyle{unsrt}	% in order of appearance
%\bibliographystyle{acm}	% (uses file "plain.bst")
%\bibliographystyle{abbrv}	% (uses file "plain.bst")
%\bibliographystyle{siam}	% (uses file "plain.bst")
\bibliography{references}		% expects file "myrefs.bib"

\end{document} 