# Conflict: kluwer and amsmath

When I try to use the document class kluwer together with amsmath there seems to be a conflict. Is is possible to avoid this conflict?

Here's an example. The following

\documentclass{kluwer}

%\let\iint\noexists
\usepackage{amsmath}

\begin{document}

Bla bla bla

\end{document}

gives the following error

ERROR: LaTeX Error: Command \iint already defined.
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For me, a minor modification of the linked fix works:

\documentclass{kluwer}

\let\iint\undefined
\let\iiint\undefined
\usepackage{amsmath}

\begin{document}

Bla bla bla

\end{document}

You need to undefine both \iint and \iiint (count the is!)

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