The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Okumura:FEL2017-TUP070}
\bibitem{Okumura:FEL2017-TUP070}
J. Okumura, T. Kii, H. Ohgaki, and H. Zen,
\textquotedblleft{Development of Mid-Infrared Photoacoustic Spectroscopy System for Solid Samples at Kyoto University Free Electron Laser Facility}\textquotedblright,
in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-TUP070}, 2018.
% in \emph{Proc. FEL2017}, \url{https://doi.org/10.18429/JACoW-FEL2017-TUP070}, pp. 378--381.
% in \emph{Proc. FEL2017}, Santa Fe, NM, USA, Aug. 2017, paper TUP070, \url{https://doi.org/10.18429/JACoW-FEL2017-TUP070}
% in \emph{Proc. 38th Int. Free Electron Laser Conf. (FEL'17)},
% Santa Fe, NM, USA, Aug. 2017, paper TUP070, pp. 378--381,
% ISBN: 978-3-95450-179-3,
% \url{http://jacow.org/fel2017/papers/tup070.pdf},
% \url{https://doi.org/10.18429/JACoW-FEL2017-TUP070}, 2018.