%\cite{Xin:FEL2015-MOP042}
\bibitem{Xin:FEL2015-MOP042}
    M.~Xin, K.~Safak, P.T.~Callahan, F.X.~Kaernter, and M.Y.~Peng,
   \textquotedblleft{All-Fiber Approach to Long-Term Stable Timing Distribution System}\textquotedblright,
%  in \emph{Proc. FEL2015}, MOP042, pp. 122--125,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper MOP042, pp. 122--125,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper MOP042, pp. 122--125,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/mop042.pdf},
    doi:10.18429/JACoW-FEL2015-MOP042, 2015.