[n] J. Sch?ñfer et al., “Split Ring Resonator Experiment - Simulation Results”, in Proc. IPAC'21, Campinas, Brazil, May 2021, pp. 888-891. doi:10.18429/JACoW-IPAC2021-MOPAB280
%\cite{Sch?ñfer:IPAC21-MOPAB280} \bibitem{Sch?ñfer:IPAC21-MOPAB280} J. Sch?ñfer \emph{et al.}, \textquotedblleft{Split Ring Resonator Experiment - Simulation Results}\textquotedblright, in \emph{Proc. IPAC’21}, Campinas, Brazil, May 2021, pp. 888--891. \url{doi:10.18429/JACoW-IPAC2021-MOPAB280}
@inproceedings{sch?ñfer:ipac21-mopab280, author = {J. Sch?ñfer and others}, title = {{Split Ring Resonator Experiment - Simulation Results}}, booktitle = {Proc. IPAC'21}, pages = {888--891}, paper = {MOPAB280}, venue = {Campinas, Brazil, May 2021}, publisher = {JACoW Publishing, Geneva, Switzerland}, doi = {10.18429/JACoW-IPAC2021-MOPAB280}, url = {https://jacow.org/ipac2021/papers/MOPAB280.pdf}, language = {english} }