The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Castro:IPAC2017-TUPIK020}
\bibitem{Castro:IPAC2017-TUPIK020}
G. Castro, L. Celona, S. Gammino, O. Leonardi, F. Leone, D. Mascali, \emph{et al.},
% G. Castro, L. Celona, S. Gammino, O. Leonardi, F. Leone, D. Mascali, M. Mazzaglia, E. Naselli, L. Neri, D. Nicolosi, R. Reitano, G. Torrisi, and B. Zaniol,
% G. Castro \emph{et al.},
\textquotedblleft{Application of Optical Emission Spectroscopy to High Current Proton Sources}\textquotedblright,
% in \emph{Proc. IPAC2017}, pp. 1721--1723,
% in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper TUPIK020, pp. 1721--1723,
in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)},
Copenhagen, Denmark, May 2017, paper TUPIK020, pp. 1721--1723,
% ISBN: 978-3-95450-182-3,
\url{http://jacow.org/ipac2017/papers/tupik020.pdf},
\url{https://doi.org/10.18429/JACoW-IPAC2017-TUPIK020}, 2017.