 
The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Lei:IPAC2019-WEPRB039}
\bibitem{Lei:IPAC2019-WEPRB039}
   Y. Lei, C.T. Du, X. Guan, R. Tang, X.W. Wang, Q.Z. Xing, and \emph{et al.},
%   Y. Lei, C.T. Du, X. Guan, R. Tang, X.W. Wang, Q.Z. Xing, and S.X. Zheng,
%   Y. Lei \emph{et al.},
   \textquotedblleft{Tuning of a Tapered Ridge-Loaded Waveguide Coupler for a Drift Tube LINAC of the Compact Pulsed Hadron Source}\textquotedblright,
% --- abbreviated form (published paper) - JACoW template Feb 2018 ---
   in \emph{Proc. IPAC'19}, Melbourne, Australia, May 2019, pp. 2893--2895,
   \url{doi:10.18429/JACoW-IPAC2019-WEPRB039}
% --- complete form (published paper) - JACoW template Feb 2018 ---
%  in \emph{Proc. 10th International Particle Accelerator Conference (IPAC'19)}, Melbourne, Australia, May 2019,
%  pp. 2893--2895. \url{doi:10.18429/JACoW-IPAC2019-WEPRB039}
% --- additional material ---
%  ISBN: 978-3-95450-208-0, \url{http://jacow.org/ipac2019/papers/weprb039.pdf}