%\cite{Qian:FEL2015-MOD03}
\bibitem{Qian:FEL2015-MOD03}
    H.J.~Qian, J.~Feng, D.~Filippetto, R.K.~Li, J.R.~Nasiatka, H.A.~Padmore, \emph{et al.},
%   H.J. Qian \emph{et al.},
   \textquotedblleft{Alkali Cathode Testing for LCLS-II at APEX}\textquotedblright,
%  in \emph{Proc. FEL2015}, MOD03, pp. 280--284,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper MOD03, pp. 280--284,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper MOD03, pp. 280--284,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/mod03.pdf},
    doi:10.18429/JACoW-FEL2015-MOD03, 2015.