The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{li:ibic2019-tuco01} \bibitem{li:ibic2019-tuco01} R.K. Li, \textquotedblleft{Terahertz-Based Sub-femtosecond Metrology of Relativistic Electron Beams}\textquotedblright, % --- abbreviated form (UNpublished paper) - JACoW template Feb 2018 --- presented at IBIC'19, Malmö, Sweden, Sep. 2019, paper TUCO01, unpublished.