The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Heilmann:IPAC2017-TUPVA057}
\bibitem{Heilmann:IPAC2017-TUPVA057}
M. Heilmann, X. Du, P. Gerhard, L. Groening, M. Kaiser, S. Mickat, \emph{et al.},
% M. Heilmann, X. Du, P. Gerhard, L. Groening, M. Kaiser, S. Mickat, A. Rubin, and A. Seibel,
% M. Heilmann \emph{et al.},
\textquotedblleft{Design Study for a Prototype Alvarez-Cavity for the Upgraded Unilac}\textquotedblright,
% in \emph{Proc. IPAC2017}, pp. 2205--2207,
% in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper TUPVA057, pp. 2205--2207,
in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)},
Copenhagen, Denmark, May 2017, paper TUPVA057, pp. 2205--2207,
% ISBN: 978-3-95450-182-3,
\url{http://jacow.org/ipac2017/papers/tupva057.pdf},
\url{https://doi.org/10.18429/JACoW-IPAC2017-TUPVA057}, 2017.