backref causing infinite rerun loop

[urehmann]

Together with the amsrefs package, the package backref causes an infinite rerun loop. Below is a kind of minimal example.

amsrefs returns a warning for the cite syntax, but the suggested alternative causes an error ("! Missing \endcsname inserted.")

%\documentclass[10pt]{article} \documentclass[10pt]{amsart}

\usepackage{backref} \usepackage{amsrefs}

\begin{document}

\section{Important Result}

Thm. follows from %\cite{Theorem~11}*{EZ}. \cite[Theorem~11]{EZ}.

\begin{thebibliography}{123} \bibitem {EZ} TestAuthor, \emph{TestTitle,} TestJournal \textbf 50 (2045), 601-622. \end{thebibliography}

\end{document}