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%\cite{Sakai:LINAC2018-MOPO024}
\bibitem{Sakai:LINAC2018-MOPO024}
T. Sakai, K. Hayakawa, Y. Hayakawa, K. Nogami, H. Ogawa, N. Sei, \emph{et al.},
% T. Sakai, K. Hayakawa, Y. Hayakawa, K. Nogami, H. Ogawa, N. Sei, Y. Sumitomo, Y. Takahashi, and T. Tanaka,
% T. Sakai \emph{et al.},
\textquotedblleft{Development of High Power Coherent Terahertz Wave Sources at Lebra 125 MeV Linac in Nihon University}\textquotedblright,
% --- abbreviated form (published paper) - JACoW template Feb 2018 ---
in \emph{Proc. LINAC'18}, Beijing, China, Sep. 2018, pp. 78--80,
\url{doi:10.18429/JACoW-LINAC2018-MOPO024}
% --- complete form (published paper) - JACoW template Feb 2018 ---
% in \emph{Proc. 29th Linear Accelerator Conference (LINAC'18)}, Beijing, China, Sep. 2018,
% pp. 78--80. \url{doi:10.18429/JACoW-LINAC2018-MOPO024}
% --- additional material ---
% ISBN: 978-3-95450-194-6, ISSN: 2226-0366, \url{http://jacow.org/linac2018/papers/mopo024.pdf}