%\cite{Zen:FEL2015-MOA01}
\bibitem{Zen:FEL2015-MOA01}
    H.~Zen, T.~Kii, R.~Kuroda, K.~Masuda, H.~Ohgaki, S.~Suphakul, and Y.~Taira,
%   H. Zen \emph{et al.},
   \textquotedblleft{MIR-FEL Oscillator Lasing by Photocathode Operation of LaB6 Thermionic Cathode in KU-FEL}\textquotedblright,
%  presented at FEL2015, Daejeon, Republic of Korea, August 2015, paper MOA01, unpublished.
   presented at the 37th International Free Electron Laser Conference (FEL2015), Daejeon, Republic of Korea, August 2015, paper MOA01, unpublished.