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\section{Ground state quartic response functions: \Sec{CC4R}}
\label{sec:cc4r}
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\begin{description}
\item[\Key{OPERAT}] 
\item[\Key{DIPOLE}] 
\item[\Key{PRINT }] 
\item[\Key{STATIC}] 
\item[\Key{MIXFRE}] 
\item[\Key{4HGFRE}] 
\item[\Key{USECHI}] 
%
\end{description}
