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%\cite{arnold:erl2019-wepnec09}
\bibitem{arnold:erl2019-wepnec09}
A. Arnold, S. Ma, P. Murcek, J. Schaber, J. Teichert, R. Xiang, and \emph{et al.},
% A. Arnold, S. Ma, P. Murcek, J. Schaber, J. Teichert, R. Xiang, and P.Z. Zwartek,
% A. Arnold \emph{et al.},
\textquotedblleft{Thz User Operation With 200 pC CW Beam Generated by the ELBE SRF Gun II}\textquotedblright,
% --- abbreviated form (UNpublished paper) - JACoW template Feb 2018 ---
presented at ERL'19, Berlin, Germany, Sep. 2019, paper WEPNEC09, unpublished.