%\cite{Di Mitri:FEL2015-MOP079}
\bibitem{Di Mitri:FEL2015-MOP079}
    S.~Di Mitri,
   \textquotedblleft{On the Importance of Electron Beam Brightness in High Gain Free Electron Lasers}\textquotedblright,
%  in \emph{Proc. FEL2015}, MOP079, pp. 227--232,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper MOP079, pp. 227--232,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper MOP079, pp. 227--232,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/mop079.pdf},
    doi:10.18429/JACoW-FEL2015-MOP079, 2015.