The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Jiang:SAP2017-TUAH4}
\bibitem{Jiang:SAP2017-TUAH4}
B.C. Jiang, J.H. Chen, Q.L. Zhang, and Z.T. Zhao,
\textquotedblleft{Using a Bessel Light Beam as an Ultra-short Period Helical Undulator}\textquotedblright,
in \emph{Proc. SAP2017}, \url{https://doi.org/10.18429/JACoW-SAP2017-TUAH4}, 2018.
% in \emph{Proc. SAP2017}, \url{https://doi.org/10.18429/JACoW-SAP2017-TUAH4}, pp. 121--123.
% in \emph{Proc. SAP2017}, Jishou, China, Aug. 2017, paper TUAH4, \url{https://doi.org/10.18429/JACoW-SAP2017-TUAH4}
% in \emph{Proc. 13th Symposium on Accelerator Physics (SAP'17)},
% Jishou, China, Aug. 2017, paper TUAH4, pp. 121--123,
% ISBN: 978-3-95450-199-1,
% \url{http://jacow.org/sap2017/papers/tuah4.pdf},
% \url{https://doi.org/10.18429/JACoW-SAP2017-TUAH4}, 2018.