The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Yamamoto:IPAC2017-MOPIK011} \bibitem{Yamamoto:IPAC2017-MOPIK011} N. Yamamoto, M. Hosaka, M. Katoh, A. Mano, T. Miyauchi, and Y. Takashima, \textquotedblleft{Electron Beam Generation From InGaN/GaN Superlattice Photocathode}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 522--524, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper MOPIK011, pp. 522--524, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper MOPIK011, pp. 522--524, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/mopik011.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-MOPIK011}, 2017.