bibtex-0.1: hackage/hackage.tex
\documentclass[a4paper]{article}
\usepackage{natbib}
\usepackage[colorlinks=true]{hyperref}
\begin{document}
% \nocite{*}
\input{thielemann}
\bibliographystyle{plain}
\bibliography{hackage}
% with alpha style, BibTeX generates identifiers like Ant09{ that cannot be handled by LaTeX
% \bibliographystyle{alpha}
% \bibliographystyle{plain}
% \bibliography{hackage-b}
\end{document}