[n] L. H. Yu, “Gain of Hard X-Ray Fel at 3 GeV and Required Parameters”, in Proc. IPAC'21, Campinas, Brazil, May 2021, pp. 178-181. doi:10.18429/JACoW-IPAC2021-MOPAB040
%\cite{LHYu:IPAC21-MOPAB040} \bibitem{LHYu:IPAC21-MOPAB040} L. H. Yu, \textquotedblleft{Gain of Hard X-Ray Fel at 3 GeV and Required Parameters}\textquotedblright, in \emph{Proc. IPAC’21}, Campinas, Brazil, May 2021, pp. 178--181. \url{doi:10.18429/JACoW-IPAC2021-MOPAB040}
@inproceedings{lhyu:ipac21-mopab040, author = {L. H. Yu}, title = {{Gain of Hard X-Ray Fel at 3 GeV and Required Parameters}}, booktitle = {Proc. IPAC'21}, pages = {178--181}, paper = {MOPAB040}, venue = {Campinas, Brazil, May 2021}, publisher = {JACoW Publishing, Geneva, Switzerland}, doi = {10.18429/JACoW-IPAC2021-MOPAB040}, url = {https://jacow.org/ipac2021/papers/MOPAB040.pdf}, language = {english} }