%\cite{Campbell:FEL2015-WEP073}
\bibitem{Campbell:FEL2015-WEP073}
    L.T.~CampbellA.R.~Maier,
   \textquotedblleft{Dispersion of Correlated Energy Spread Electron Beams in the Free Electron Laser}\textquotedblright,
%  in \emph{Proc. FEL2015}, WEP073, pp. 718--721,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper WEP073, pp. 718--721,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper WEP073, pp. 718--721,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/wep073.pdf},
    doi:10.18429/JACoW-FEL2015-WEP073, 2015.
