The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Yan:FEL2017-TUC01}
\bibitem{Yan:FEL2017-TUC01}
J. Yan, H. Hao, S. Huang, J.L. Li, V. Litvinenko, S.F. Mikhailov, \emph{et al.},
% J. Yan, H. Hao, S. Huang, J.L. Li, V. Litvinenko, S.F. Mikhailov, V. Popov, N.A. Vinokurov, and Y.K. Wu,
% J. Yan \emph{et al.},
\textquotedblleft{Polarization Control of Storage Ring FELs Using Cross Polarized Helical Undulators}\textquotedblright,
in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-TUC01}, 2018.
% in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-TUC01}, pp. 235--239.
% in \emph{Proc. FEL2017}, Santa Fe, NM, USA, Aug. 2017, paper TUC01, \url{https://doi.org/10.18429/JACoW-FEL2017-TUC01}
% in \emph{Proc. 38th Int. Free Electron Laser Conf. (FEL'17)},
% Santa Fe, NM, USA, Aug. 2017, paper TUC01, pp. 235--239,
% ISBN: 978-3-95450-179-3,
% \url{http://jacow.org/fel2017/papers/tuc01.pdf},
% \url{https://doi.org/10.18429/JACoW-FEL2017-TUC01}, 2018.