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%\cite{Cocco:FEL2017-WEC03}
\bibitem{Cocco:FEL2017-WEC03}
D. Cocco, C.L. Hardin, D.S. Morton, J. Nicolás, and P. Stefan,
\textquotedblleft{Wavefront Preserving Optics for the LCLS Photon Transport System}\textquotedblright,
presented at FEL2017, Santa Fe, NM, USA, Aug. 2017, paper WEC03, unpublished.
% presented at the 38th Int. Free Electron Laser Conf. (FEL'17), Santa Fe, NM, USA, Aug. 2017, paper WEC03, unpublished.