The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Schneidmiller:FEL2017-MOP032}
\bibitem{Schneidmiller:FEL2017-MOP032}
E. Schneidmiller, M.V. Yurkov,
\textquotedblleft{Reverse Undulator Tapering for Polarization Control and Background-Free Harmonic Production in XFELs: Results from FLASH}\textquotedblright,
in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-MOP032}, 2018.
% in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-MOP032}, pp. 106--108.
% in \emph{Proc. FEL2017}, Santa Fe, NM, USA, Aug. 2017, paper MOP032, \url{https://doi.org/10.18429/JACoW-FEL2017-MOP032}
% in \emph{Proc. 38th Int. Free Electron Laser Conf. (FEL'17)},
% Santa Fe, NM, USA, Aug. 2017, paper MOP032, pp. 106--108,
% ISBN: 978-3-95450-179-3,
% \url{http://jacow.org/fel2017/papers/mop032.pdf},
% \url{https://doi.org/10.18429/JACoW-FEL2017-MOP032}, 2018.