The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Sargsyan:IPAC2017-WEPAB001} \bibitem{Sargsyan:IPAC2017-WEPAB001} A. Sargsyan, W. Decking, and V. Sahakyan, \textquotedblleft{Parallel Operation of SASE1 and SASE3 Undulator Sections of European XFEL}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 2554--2556, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper WEPAB001, pp. 2554--2556, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper WEPAB001, pp. 2554--2556, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/wepab001.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-WEPAB001}, 2017.