The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Deng:FEL2017-MOBB01} \bibitem{Deng:FEL2017-MOBB01} H.X. Deng, \textquotedblleft{Harmonic Lasing \& Gain Cascading: More Efficient X-Ray Free Electron Laser Oscillators}\textquotedblright, presented at FEL2017, Santa Fe, NM, USA, Aug. 2017, paper MOBB01, unpublished. % presented at the 38th Int. Free Electron Laser Conf. (FEL'17), Santa Fe, NM, USA, Aug. 2017, paper MOBB01, unpublished.