%\cite{Novokhatski:FEL2015-MOP055}
\bibitem{Novokhatski:FEL2015-MOP055}
    A.~Novokhatski, F.-J.~Decker, Y.~Nosochkov, and M.K.~Sullivan,
   \textquotedblleft{The Effect of Wakefields on the FEL Performance}\textquotedblright,
%  in \emph{Proc. FEL2015}, MOP055, pp. 161--165,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper MOP055, pp. 161--165,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper MOP055, pp. 161--165,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/mop055.pdf},
    doi:10.18429/JACoW-FEL2015-MOP055, 2015.