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%\cite{Kim:FEL2017-TUC03} \bibitem{Kim:FEL2017-TUC03} K.-J. Kim, K.L.F. Bane, V.D. Blank, Y. Ding, P. Emma, W.M. Fawley, \emph{et al.}, % K.-J. Kim, K.L.F. Bane, V.D. Blank, Y. Ding, P. Emma, W.M. Fawley, C. Grizolli, J.B. Hastings, Z. Huang, S.P. Kearney, T. Kolodziej, J. Krzywinski, R.R. Lindberg, G. Marcus, T.J. Maxwell, W. Qin, X. Shi, D. Shu, Yu. Shvyd'ko, S. Stoupin, S. Terentiev, and J. Zemella, % K.-J. Kim \emph{et al.}, \textquotedblleft{High-Flux, Fully Coherent X-Ray FEL Oscillator}\textquotedblright, presented at FEL2017, Santa Fe, NM, USA, Aug. 2017, paper TUC03, unpublished. % presented at the 38th Int. Free Electron Laser Conf. (FEL'17), Santa Fe, NM, USA, Aug. 2017, paper TUC03, unpublished.