I'm trying to convert my manuscript to PloS Comp Bio style. They provide a [BibTeX style file](http://www.plosgenetics.org/static/plos2009.bst). This works fine for inline citations with `\usepackage[numbers,sort&compress]{natbib}` (i.e. `\citep{FooYear}` -> [1]).

However, this style file does not seem to be compatible with the natbib `\citet` command. Whenever I use this I get `\citet{FooYear}` -> "(author?) [1]" (the reference to the author's name is unresolved). What I want is to display a reference to the author (i.e. "Foo & Smith [1]". Obviously, I could fix this manually, but I have quite a large number of cases in the manuscript.

If I use a different BibTeX style then the citations work fine but then the bibliography is not formatted correctly.

Minimum example
---------------

As suggested below here is a minimum example.

```
\documentclass{article}
\usepackage[numbers]{natbib}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@misc{A01,
   author = {Test, A. and Foo, B.},
   year = {2001},
   title = {Alpha},
}
@misc{A02,
   author = {Alex, A. and Bar, B.},
   year = {2005},
   title = {Alpha},
}
\end{filecontents}

\begin{document}

% These citations will work but in the apalike bibstyle they will not be sorted
% in citation order (the first citation is [2]).
\citep{A01}, \citep{A02}, \citet{A02} 

% The author name will be undefined with the unsrt bibtex style
\citeauthor{A02}, \citet{A01}

\bibliography{\jobname}
\bibliographystyle{unsrt}
%\bibliographystyle{apalike}

\end{document}

```