The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Hajima:IPAC2016-MOPOW017}
\bibitem{Hajima:IPAC2016-MOPOW017}
R. Hajima, M. Fujiwara,
\textquotedblleft{Generation of GeV Photons from X-ray Free Electron Laser Oscillators}\textquotedblright,
% in \emph{Proc. IPAC2016}, pp. 751--753,
% in \emph{Proc. IPAC2016}, Busan, Korea, May 2016, paper MOPOW017, pp. 751--753,
in \emph{Proc. 7th Int. Particle Accelerator Conf. (IPAC'16)},
Busan, Korea, May 2016, paper MOPOW017, pp. 751--753,
% ISBN: 978-3-95450-147-2,
\url{http://jacow.org/ipac2016/papers/mopow017.pdf},
\url{doi:10.18429/JACoW-IPAC2016-MOPOW017}, 2016.