%\cite{Schreiber:FEL2015-TUP042}
\bibitem{Schreiber:FEL2015-TUP042}
    S.~SchreiberS.~Lederer,
   \textquotedblleft{Lifetime of Cs2Te Cathodes Operated at the FLASH Facility}\textquotedblright,
%  in \emph{Proc. FEL2015}, TUP042, pp. 464--467,
%  in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper TUP042, pp. 464--467,
   in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper TUP042, pp. 464--467,
    ISBN: 978-3-95450-134-2,
    \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup042.pdf},
    doi:10.18429/JACoW-FEL2015-TUP042, 2015.