The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Zen:FEL2017-WEP014} \bibitem{Zen:FEL2017-WEP014} H. Zen, T. Kii, K. Masuda, T. Nakajima, and H. Ohgaki, \textquotedblleft{Pulse Duration Measurement of Pico-second DUV Photocathode Driving Laser by Autocorrelation Technique Using Two-Photon Absorption in Bulk Material}\textquotedblright, in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-WEP014}, 2018. % in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-WEP014}, pp. 447--449. % in \emph{Proc. FEL2017}, Santa Fe, NM, USA, Aug. 2017, paper WEP014, \url{https://doi.org/10.18429/JACoW-FEL2017-WEP014} % in \emph{Proc. 38th Int. Free Electron Laser Conf. (FEL'17)}, % Santa Fe, NM, USA, Aug. 2017, paper WEP014, pp. 447--449, % ISBN: 978-3-95450-179-3, % \url{http://jacow.org/fel2017/papers/wep014.pdf}, % \url{https://doi.org/10.18429/JACoW-FEL2017-WEP014}, 2018.