The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Schneidmiller:FEL2017-MOP035} \bibitem{Schneidmiller:FEL2017-MOP035} E. Schneidmiller, M.V. Yurkov, \textquotedblleft{Optimum Undulator Tapering of SASE FEL: Theory and Experimental Results From FLASH2}\textquotedblright, in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-MOP035}, 2018. % in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-MOP035}, pp. 113--116. % in \emph{Proc. FEL2017}, Santa Fe, NM, USA, Aug. 2017, paper MOP035, \url{https://doi.org/10.18429/JACoW-FEL2017-MOP035} % in \emph{Proc. 38th Int. Free Electron Laser Conf. (FEL'17)}, % Santa Fe, NM, USA, Aug. 2017, paper MOP035, pp. 113--116, % ISBN: 978-3-95450-179-3, % \url{http://jacow.org/fel2017/papers/mop035.pdf}, % \url{https://doi.org/10.18429/JACoW-FEL2017-MOP035}, 2018.