\documentclass{article}

\bibliographystyle{alpha}

\begin{document}

\title{My Title}
\author{My Name}
\maketitle

\begin{abstract}
This paper goes about.
\end{abstract}

\section{Section 1}
Here we write a lot of text about our smart ideas.
%comments are possible
\cite{Eckert2007}


\bibliography{references}

\end{document}