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%\cite{Kim:FEL2017-WEB02} \bibitem{Kim:FEL2017-WEB02} H.W. Kim, I.H. Baek, R. Fabian, B.A. Gudkov, B. Han, H. Ihee, \emph{et al.}, % H.W. Kim, I.H. Baek, R. Fabian, B.A. Gudkov, B. Han, H. Ihee, K.H. Jang, Y.U. Jeong, J. Kim, K.W. Kim, Y.-C. Kim, K. Lee, S.V. Miginsky, J.H. Nam, K.Y. Oang, S. Park, S. Setiniyaz, N.A. Vinokurov, and H. Yang, % H.W. Kim \emph{et al.}, \textquotedblleft{Characterization of Electron Bunches in Ultrafast Electron Diffraction Beamlines at KAERI}\textquotedblright, presented at FEL2017, Santa Fe, NM, USA, Aug. 2017, paper WEB02, unpublished. % presented at the 38th Int. Free Electron Laser Conf. (FEL'17), Santa Fe, NM, USA, Aug. 2017, paper WEB02, unpublished.