I am using natbib and amsthm. If I use \citep[Thm. 4.5]{key} in the options of my theorem environment I get the error:
Argument of \NAT@@citetp has an extra }. \begin{thm}[\citep[Thm]
Why can't I put a citep with options into the options of a theorem environment? Below I have my code sample.
Thank you, for your help
\documentclass[a4paper]{scrartcl}
\renewcommand\sf{\sffamily}
\usepackage{scrhack}
\usepackage[numbers]{natbib}
\usepackage{amsmath, amsthm, amssymb, dsfont}
\usepackage{amsfonts}
\usepackage{amsopn}
\usepackage{bbold}
\usepackage{bbm}
\newtheoremstyle{mystyle}% % Name
{}% % Space above
{}% % Space below
{\normalfont}% % Body font
{}% % Indent amount
{\bfseries}% % Theorem head font
{}% % Punctuation after theorem head
{ }% % Space after theorem head, ' ', or \newline
{}% % Theorem head spec (can be left empty, meaning `normal')
\theoremstyle{mystyle}
\newtheorem{Theorem}{Theorem}%
\begin{document}
\begin{Theorem}[\citep[Thm]{cs_Foucart13}]
test
\end{Theorem}
\bibliographystyle{plainnat-d}
\bibliography{literatur}