Hier ist ein Minimalbeispiel:
\documentclass{scrbook} \usepackage[style=authoryear]{biblatex} \bibliography{literatur} \begin{document} \nocite{Science} \printbibliography \end{document}
@ARTICLE{Science, author = {James Badro and Jean-Pascal Rueff and Gyoergy Vanko and Giulio Monaco and Guillaume Fiquet and Francois Guyot}, title = {Elektronic Transitions in Perovskite: Possible Nonconvecting Layers in the Lower Mantle}, journal = {Sience}, year = {2004}, volume = {305}, pages = {383-386} }