[Tex/LaTex] How to set the number of the first citation

bibliographiescountersnatbibnumbering

I am using BibTeX and natbib for my citations. In the bibliography the first entry usually starts with [1]. Now I would like to shift all the numbers in the bibliography and text by a certain offset, e.g. 15, so that the first item is called 16 in this document.

Best Answer

I'm not sure why you want to do this (there are various packages that deal with multiple/subdivided bibliographies), but you could use the etoolbox package to append natbib's definition of the thebibliography environment.

\documentclass{article}

\usepackage[numbers]{natbib}

\usepackage{etoolbox}

\makeatletter
\apptocmd{\thebibliography}{\global\c@NAT@ctr 15\relax}{}{}
\makeatother

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@misc{A01,
  author = {Author, A.},
  year = {2001},
  title = {Alpha},
}
@misc{B02,
  author = {Buthor, B.},
  year = {2002},
  title = {Bravo},
}
\end{filecontents}

\begin{document}

Some text \citep{A01,B02}.

\bibliographystyle{plainnat}
\bibliography{\jobname}

\end{document}

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