The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Walker:FEL2017-FRA05}
\bibitem{Walker:FEL2017-FRA05}
P.A. Walker,
\textquotedblleft{European Plasma Accelerator Design Study EuPRAXIA with FEL \& HEP User Areas}\textquotedblright,
presented at FEL2017, Santa Fe, NM, USA, Aug. 2017, paper FRA05, unpublished.
% presented at the 38th Int. Free Electron Laser Conf. (FEL'17), Santa Fe, NM, USA, Aug. 2017, paper FRA05, unpublished.