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%\cite{arnold:srf2019-mofab6}
\bibitem{arnold:srf2019-mofab6}
A. Arnold, M. Freitag, U. Lehnert, P. Michel, P. Murcek, Ch. Schneider, \emph{et al.},
% A. Arnold, M. Freitag, U. Lehnert, P. Michel, P. Murcek, Ch. Schneider, J. Teichert, and R. Xiang,
% A. Arnold \emph{et al.},
\textquotedblleft{More than 15 Years of CW SRF Operation at ELBE}\textquotedblright,
% --- abbreviated form (UNpublished paper) - JACoW template Feb 2018 ---
presented at SRF'19, Dresden, Germany, Jun.-Jul. 2019, paper MOFAB6, unpublished.