# Empty bibliography and undefined references [closed]

My minimal working example. But it does not work.

Bibliography

%\RequirePackage[ngerman=ngerman-x-2012-05-30]{hyphsubst}
\documentclass[ngerman, fontsize=12pt]{scrartcl}

%\usepackage{xunicode}
%\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

%\usepackage{hyphsubst}
%\HyphSubstIfExists{ngerman-x-2012-05-30}{%
%\HyphSubstLet{ngerman}{ngerman-x-2012-05-30}}{}

\usepackage[]{babel}
%\usepackage{hyperref}
\usepackage[autostyle=true, german=quotes]{csquotes}
\usepackage[backend=biber]{biblatex}
%\usepackage{blindtext}
%\usepackage{libertineotf}
%\usepackage{fnpct}
%\usepackage{ccicons}
%\usepackage{embrac}

%\usepackage[modulo]{lineno}
%\linenumbers

\begin{document}

\cite{mierau}

\printbibliography

\end{document}

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## closed as too localized by Qrrbrbirlbel, Kurt, lockstep, Harish Kumar, ThorstenOct 24 '12 at 5:00

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Can you please explain what not works? "Does not work" is not very helpful ... Have you run bibtex or biber? Which way? What is the content of your bib file? – Kurt Oct 23 '12 at 19:26
I've edited this to indent your code: you can do this by putting four spaces before code, or selecting it an using the code button {}. Apart from some more explanation as Kurt suggests, you might like to include the relevant .bib entry, preferable via filecontents. As things stand it will be hard to help. – Paul Stanley Oct 23 '12 at 19:27
No, I don't need. Your problem is you are calling \cite{mierau} but you have only Dietrichin your bib file ... – Kurt Oct 23 '12 at 19:40
It looks like it might be a biber cache problem: something I've experienced a few times. Have a look at humtex.wordpress.com/2011/11/29/… and try clearing the cache. – Paul Stanley Oct 23 '12 at 19:54
@PaulStanley I delete the files and the problem is solved. – Eric Danielski Oct 23 '12 at 21:12

Okay. Just to have a starting point run the following MWE (store it in a separate directory to avoid changing your file Facharbeit.bib). On my system it runs without problems. Please see that I deleted libertineotf because I run it with pdflatex and then libertineotf throws errors.

%http://tex.stackexchange.com/questions/78820/empty-bibliography-and-undefined-references

%\RequirePackage[ngerman=ngerman-x-2012-05-30]{hyphsubst}
\RequirePackage{filecontents}
%writing file Facharbeit.bib
\begin{filecontents*}{Facharbeit.bib}
@PREAMBLE{ "\providecommand*{\BibTeX}{Bib\TeX} " }

@book{mierau,
title      = {Nationalsozialistische Expeditionspolitik: deutsche Asien-Expeditionen 1933 -- 1945},
isbn       = {3-8316-0409-6},
shorttitle = {Nationalsozialistische Expeditionspolitik},
publisher  = {Utz},
author     = {Mierau, Peter},
year       = {2006},
file       = {DNB, Katalog der Deutschen Nationalbibliothek:C:\Users\ericdanielski\Desktop\FirefoxPortable\Data\profile\zotero\storage\PCUH3IQM\opac.htm;jsessionid=61596D477EE425917EC0601AF3FE83BB.html:text/html}
}
\end{filecontents*}

\listfiles %used packages in log
\documentclass[ngerman, fontsize=12pt]{scrartcl}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage[ngerman]{babel}
\usepackage[autostyle=true, german=quotes]{csquotes}
\usepackage[backend=biber]{biblatex}

\title{Wissenschaftliche Auswirkungen der Tibet-Expeditionen während der NS-Zeit}
\author{Eric Danielski}
\date{\today}

\begin{document}

\maketitle

\section{Vorwort}

Eric Danielski. \cite{mierau}

\section{Anhang}

\printbibliography
\end{document}


Is the field file in your bib file necceccary?

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– Kurt Oct 23 '12 at 20:41