 
The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Xie:LINAC2018-MOPO132}
\bibitem{Xie:LINAC2018-MOPO132}
   X.C. Xie, D.M. Li, X. Li, Y.H. Pu, J. Qiao, F. Yang, \emph{et al.},
%   X.C. Xie, D.M. Li, X. Li, Y.H. Pu, J. Qiao, F. Yang, M.H. Zhao, and Z.T. Zhao,
%   X.C. Xie \emph{et al.},
   \textquotedblleft{The 7 MeV APF DTL for Proton Therapy}\textquotedblright,
% --- abbreviated form (published paper) - JACoW template Feb 2018 ---
   in \emph{Proc. LINAC'18}, Beijing, China, Sep. 2018, pp. 277--279,
   \url{doi:10.18429/JACoW-LINAC2018-MOPO132}
% --- complete form (published paper) - JACoW template Feb 2018 ---
%  in \emph{Proc. 29th Linear Accelerator Conference (LINAC'18)}, Beijing, China, Sep. 2018,
%  pp. 277--279. \url{doi:10.18429/JACoW-LINAC2018-MOPO132}
% --- additional material ---
%  ISBN: 978-3-95450-194-6, ISSN: 2226-0366, \url{http://jacow.org/linac2018/papers/mopo132.pdf}