The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{holtkamp:ipac2021-thxx01}
\bibitem{holtkamp:ipac2021-thxx01}
N.R. Holtkamp,
\textquotedblleft{The Path to High Power FELs}\textquotedblright,
% --- abbreviated form (UNpublished paper) - JACoW template Feb 2018 ---
presented at IPAC'21, Campinas, SP, Brazil, May 2021, paper THXX01, unpublished.