I have a article called v2.tex and a bibfile called research.bib. Both are in the working directory. I use windows and have installed MiKTeX and TeXstudio.

In the v2.tex file I have the following code:

\documentclass{article}
\usepackage{natbib}

\begin{document}
some text from author \citet{clewlow} and \citet{pindyck}.

\bibliographystyle{harward}
\bibliography{research}

\end{document}


And in the bibfile I have two articles, called "Clewlow" and "Pindyck".

When running bibtex and latex, I get

there were undefined citations

in the tex file, and error that

in the bibfile. The citations in the pdf ends up as question marks.

I have been googeling this for days, and I cant seem to figure it out! Any tips?

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## closed as unclear what you're asking by Joseph Wright♦Aug 13 '13 at 11:03

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

You cite the articles as "clewlow" and "pindyck" (small), and in the bib file they are called "Clewlow" and "Pindyck" (capital)? –  mafp Apr 16 '13 at 15:32
Yes, this command is case sensitive. –  smh Apr 16 '13 at 15:58
I have the exact same problem. I have a shared folder between a windows computer and mine which has ubuntu and once in a while these problems arise in Windows but not in ubuntu. I've compiled the file dozens of times without problems and just today the citations decided to be gone. –  Gerardo May 1 '13 at 2:28
To be able to answer here, we'll need to see the .bib file and also the logs (or at least part of them). Until then, this is 'unclear' as we can't answer. –  Joseph Wright Aug 13 '13 at 11:03
It's a TexStudio problem. TexStudio does not know where to look for the log file, which is in another directory as the current file being compiled. I tried to set a "master" file, which I expected would resolve the issue. Still looking for answer. –  PatrickT Oct 21 '14 at 8:56