 
The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Takeuchi:LINAC2018-THPO126}
\bibitem{Takeuchi:LINAC2018-THPO126}
   Y. Takeuchi, Y. Iwashita, and H. Tongu,
   \textquotedblleft{Compact H\textsuperscript{+} ECR Ion Source with  Pulse Gas Valve}\textquotedblright,
% --- abbreviated form (published paper) - JACoW template Feb 2018 ---
   in \emph{Proc. LINAC'18}, Beijing, China, Sep. 2018, pp. 955--957,
   \url{doi:10.18429/JACoW-LINAC2018-THPO126}
% --- complete form (published paper) - JACoW template Feb 2018 ---
%  in \emph{Proc. 29th Linear Accelerator Conference (LINAC'18)}, Beijing, China, Sep. 2018,
%  pp. 955--957. \url{doi:10.18429/JACoW-LINAC2018-THPO126}
% --- additional material ---
%  ISBN: 978-3-95450-194-6, ISSN: 2226-0366, \url{http://jacow.org/linac2018/papers/thpo126.pdf}