%\cite{Liu:FEL2015-WEA02}
\bibitem{Liu:FEL2015-WEA02}
    B.~Liu, J.H.~Chen, J.~Chen, Z.H.~Chen, D.X.~Dai, H.X.~Deng, \emph{et al.},
%   B. Liu \emph{et al.},
   \textquotedblleft{Status of SXFEL and DCLS}\textquotedblright,
%  presented at FEL2015, Daejeon, Republic of Korea, August 2015, paper WEA02, unpublished.
   presented at the 37th International Free Electron Laser Conference (FEL2015), Daejeon, Republic of Korea, August 2015, paper WEA02, unpublished.