The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Hall:FEL2017-TUP022}
\bibitem{Hall:FEL2017-TUP022}
C.C. Hall, D.L. Bruhwiler, A.Y. Murokh, P. Musumeci, Y. Park, Y. Sun, \emph{et al.},
% C.C. Hall, D.L. Bruhwiler, A.Y. Murokh, P. Musumeci, Y. Park, Y. Sun, S.D. Webb, and A. Zholents,
% C.C. Hall \emph{et al.},
\textquotedblleft{Modeling and Optimization of the APS Photo-Injector Using OPAL for High Efficiency FEL Experiments}\textquotedblright,
in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-TUP022}, 2018.
% in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-TUP022}, pp. 284--287.
% in \emph{Proc. FEL2017}, Santa Fe, NM, USA, Aug. 2017, paper TUP022, \url{https://doi.org/10.18429/JACoW-FEL2017-TUP022}
% in \emph{Proc. 38th Int. Free Electron Laser Conf. (FEL'17)},
% Santa Fe, NM, USA, Aug. 2017, paper TUP022, pp. 284--287,
% ISBN: 978-3-95450-179-3,
% \url{http://jacow.org/fel2017/papers/tup022.pdf},
% \url{https://doi.org/10.18429/JACoW-FEL2017-TUP022}, 2018.