The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Liu:IPAC2017-THPIK056}
\bibitem{Liu:IPAC2017-THPIK056}
Z.N. Liu, H.B. Chen, M.M. Peng, and J. Shi,
\textquotedblleft{Design of a C-Band High-Efficiency Multi-Beam Klystron}\textquotedblright,
% in \emph{Proc. IPAC2017}, pp. 4221--4223,
% in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper THPIK056, pp. 4221--4223,
in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)},
Copenhagen, Denmark, May 2017, paper THPIK056, pp. 4221--4223,
% ISBN: 978-3-95450-182-3,
\url{http://jacow.org/ipac2017/papers/thpik056.pdf},
\url{https://doi.org/10.18429/JACoW-IPAC2017-THPIK056}, 2017.