[n] J. P. MacArthur et al., “Ringdown Measured in a Four-Bounce, 20 Meter Hard X-Ray Cavity”, presented at the IPAC'21, Campinas, Brazil, May 2021, paper FRXA07, unpublished.
%\cite{MacArthur:IPAC21-FRXA07} \bibitem{MacArthur:IPAC21-FRXA07} J. P. MacArthur \emph{et al.}, \textquotedblleft{Ringdown Measured in a Four-Bounce, 20 Meter Hard X-Ray Cavity}\textquotedblright, presented at the IPAC’21, Campinas, Brazil, May 2021, paper FRXA07, unpublished.
@unpublished{macarthur:ipac21-frxa07, author = {J. P. MacArthur and others}, title = {{Ringdown Measured in a Four-Bounce, 20 Meter Hard X-Ray Cavity}}, booktitle = {Proc. IPAC'21}, paper = {FRXA07}, venue = {Campinas, Brazil, May 2021}, intype = {presented at the}, publisher = {JACoW Publishing, Geneva, Switzerland}, note = {presented at IPAC'21, Campinas, Brazil, May 2021, paper FRXA07, unpublished}, language = {english} }