%\cite{Pfingstner:FEL2015-TUP011}
\bibitem{Pfingstner:FEL2015-TUP011}
    J.~PfingstnerE.~Adli,
   \textquotedblleft{Performance and Tolerance Studies of the X-Ray Production for the X-Band FEL Collaboration}\textquotedblright,
%  in \emph{Proc. FEL2015}, TUP011, pp. 359--362,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper TUP011, pp. 359--362,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper TUP011, pp. 359--362,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup011.pdf},
    doi:10.18429/JACoW-FEL2015-TUP011, 2015.