\documentclass[12pt]{article}

\title{A Very Simple Introduction to \LaTeXe}
\author{
        Soumen Roy \\
       Bose Institute\\
        Kolkata 700009 India
        }
\date{\today}


\begin{document}
\maketitle

\begin{abstract}
Here goes the abstract. 
\end{abstract}

\section{Introduction}
This is a very simple introduction to  \LaTeX

Remember the introduction section? 
After that goes the content of the article. 
Then the results are described in Section~\ref{results}.
Finally, Section~\ref{conclusions} gives the conclusions.

\section{Previous work}
\label{previous work}
A more exhaustive \LaTeX{} example was written by Soumen Roy in 1936 ~\cite{soumen1936}.

\section{Results}\label{results}
In this section  the results are described.

\section{Conclusions}\label{conclusions}
We present great results and others will follow up on our work.

\begin{thebibliography}{10}
\bibitem{soumen1936} S. Roy, An introduction to Latex - the book that was never written, The Great University Press (1936)
\end{thebibliography}

\end{document}
Anything below this is is not considered
