%\cite{Yang:FEL2015-MOP036}
\bibitem{Yang:FEL2015-MOP036}
    H.~Yang, H.~Chung, B.~Han, C.~Jeon, Y.U.~Jeong, K.~Jung, and J.~Kim,
%   H. Yang \emph{et al.},
   \textquotedblleft{Femtosecond Synchronization of 80-MHz Ti:Sapphire Photocathode Laser Oscillator with S-Band RF Oscillator}\textquotedblright,
%  in \emph{Proc. FEL2015}, MOP036, pp. 105--106,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper MOP036, pp. 105--106,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper MOP036, pp. 105--106,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/mop036.pdf},
    doi:10.18429/JACoW-FEL2015-MOP036, 2015.