ich würde gerne der style plaindin verwenden. Mein minimalbeispiel...
\documentclass[12pt,a4paper,]{scrreprt}
\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage[square]{natbib}
\begin{document}
123456\cite{Meschede2010}....
\bibliographystyle{plaindin}
\bibliography{./texfiles/literatur}
\end{document}
@BOOK{Meschede2010,
AUTHOR = {Meschede, Dieter},
YEAR = {2010},
TITLE = {Gerthsen Physik},
EDITION = {24. Auflage},
ISBN = {978-3-642-12894-3},
PUBLISHER = {Springer-Verlag},
ADDRESS = {Berlin, Heidelberg},
}! Package natbib Error: Bibliography not compatible with author-year citations.
(natbib) Press <return> to continue in numerical citation style.
See the natbib package documentation for explanation.
Type H <return> for immediate help.
...
l.11 ...mand\NAT@force@numbers{}\NAT@force@numbers
Check the bibliography entries for non-compliant syntax,
or select author-year BibTeX style, e.g. plainnat


