%\cite{Stadler:IBIC2014-WEPD13}
\bibitem{Stadler:IBIC2014-WEPD13}
    M.~Stadler, R.~Baldinger, R.~Ditter, B.~Keil, F.~Marcellini, G.~Marinkovic, M.~Roggli, and M.~Rohrer,
%   M. Stadler \emph{et al.},
   \textquotedblleft{Development of the SwissFEL Undulator BPM System}\textquotedblright,
%  in \emph{Proc. IBIC2014}, Monterey, CA, USA, paper WEPD13, pp. 675--679,
%  in \emph{Proc. 3rd Int. Beam Instrumentation Conf.}, Monterey, CA, USA, paper WEPD13, pp. 675--679,
   in \emph{Proc. 3rd International Beam Instrumentation Conference}, Monterey, CA, USA, paper WEPD13, pp. 675--679,
    ISBN: 978-3-95450-141-0,
    \url{http://jacow.org/IBIC2014/papers/wepd13.pdf},
    2014.
