%\cite{Hamberg:FEL2015-TUP038}
\bibitem{Hamberg:FEL2015-TUP038}
    M.~HambergV.G.~Ziemann,
   \textquotedblleft{Construction of the EU-XFEL Laser Heater}\textquotedblright,
%  in \emph{Proc. FEL2015}, TUP038, pp. 452--454,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper TUP038, pp. 452--454,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper TUP038, pp. 452--454,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup038.pdf},
    doi:10.18429/JACoW-FEL2015-TUP038, 2015.