The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Tang:COOL2017-TUP13}
\bibitem{Tang:COOL2017-TUP13}
M.T. Tang, A.V. Ivanov, J. Li, H.J. Lu, X.M. Ma, L.J. Mao, \emph{et al.},
% M.T. Tang, A.V. Ivanov, J. Li, H.J. Lu, X.M. Ma, L.J. Mao, T.L. Yan, X.D. Yang, H. Zhao, and L.X. Zhao,
% M.T. Tang \emph{et al.},
\textquotedblleft{Calculations of the Gun and Collector for Electron Cooling Systems of HIAF}\textquotedblright,
in \emph{Proc. COOL2017}, \url{https://doi.org/10.18429/JACoW-COOL2017-TUP13}, 2018.
% in \emph{Proc. COOL2017}, \url{https://doi.org/10.18429/JACoW-COOL2017-TUP13}, pp. 54--57.
% in \emph{Proc. COOL2017}, Bonn, Germany, Sep. 2017, paper TUP13, \url{https://doi.org/10.18429/JACoW-COOL2017-TUP13}
% in \emph{Proc. 11th Workshop on Beam Cooling and Related Topics (COOL'17)},
% Bonn, Germany, Sep. 2017, paper TUP13, pp. 54--57,
% ISBN: 978-3-95450-198-4,
% \url{http://jacow.org/cool2017/papers/tup13.pdf},
% \url{https://doi.org/10.18429/JACoW-COOL2017-TUP13}, 2018.