The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Xiao:SAP2017-WEAH4}
\bibitem{Xiao:SAP2017-WEAH4}
O. Xiao, X.P. Li, D.R. Sun, X. Wang, and J.R. Zhang,
\textquotedblleft{Bunch Length Measurement System for 500 kV Photocathode DC Gun at IHEP}\textquotedblright,
in \emph{Proc. SAP2017}, \url{https://doi.org/10.18429/JACoW-SAP2017-WEAH4}, 2018.
% in \emph{Proc. SAP2017}, \url{https://doi.org/10.18429/JACoW-SAP2017-WEAH4}, pp. 172--175.
% in \emph{Proc. SAP2017}, Jishou, China, Aug. 2017, paper WEAH4, \url{https://doi.org/10.18429/JACoW-SAP2017-WEAH4}
% in \emph{Proc. 13th Symposium on Accelerator Physics (SAP'17)},
% Jishou, China, Aug. 2017, paper WEAH4, pp. 172--175,
% ISBN: 978-3-95450-199-1,
% \url{http://jacow.org/sap2017/papers/weah4.pdf},
% \url{https://doi.org/10.18429/JACoW-SAP2017-WEAH4}, 2018.