The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{chang:ipac2021-wepab296}
\bibitem{chang:ipac2021-wepab296}
F.Y. Chang, M.H. Chang, S.W. Chang, L.J. Chen, F.-T. Chung, Y.D. Li, \emph{et al.},
% F.Y. Chang, M.H. Chang, S.W. Chang, L.J. Chen, F.-T. Chung, Y.D. Li, M.-C. Lin, Z.K. Liu, C.H. Lo, Ch. Wang, M.-S. Yeh, and T.-C. Yu,
% F.Y. Chang \emph{et al.},
\textquotedblleft{A Klystron Phase Lock Loop for RF System at TPS Booster Ring}\textquotedblright,
% --- abbreviated form (published paper) - JACoW template Feb 2018 ---
in \emph{Proc. IPAC'21}, Campinas, SP, Brazil, May 2021, pp. 3354--3356.
\url{doi:10.18429/JACoW-IPAC2021-WEPAB296}
% --- additional material -ISSN/ISBN--
% ISBN: 978-3-95450-214-1, ISSN: 2673-5490