[Tex/LaTex] Bibtex warning: There is a number but no volume in …

bibtex

I always get this warning from using Bibtex : There is a number but no volume in … Empty journal in …

Could anyone tell me what is wrong here, how to correct this?

I am using TeXnicCenter and MikTeX package.

Best Answer

BibTeX returns that error if you reference one or more @article entries that have a number field but lack a volume field. For instance, if you run pdflatex, bibtex on 

\documentclass{article}

\usepackage{filecontents}

\begin{filecontents*}{mybiblio.bib}
@article{Jubobs:2013,
    author  = {Jubobs},
    title   = {{How} to stay away from {TeX.SE} for a solid hour},
    journal = {International Journal of Addiction},
    year    = {2013},
    number  = {2},
    pages   = {104--111},
}
\end{filecontents*}

\begin{document}
See \cite{Jubobs:2013} for further details.
\bibliographystyle{plain}
\bibliography{mybiblio}
\end{document}

BibTeX will return the following warning:

Warning--there's a number but no volume in Jubobs:2013

If you run pdflatex twice after that, the output will be:

enter image description here

The cause of that error has been given by Mico in a comment above: the volume field is mandatory in an @article BibTeX entry. (Note that BibTeX also returns an error, albeit a different one, if one or more @article entries contain neither volume nor number fields.)

If you add a volume field to that BibTeX entry, for instance volume = {11}, and then run pdflatex, bibtex, pdflatex, pdflatex, BibTeX will not return any error, and the output will be:

enter image description here

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