[n] Y. Li and R. Rossmanith, “A Superconducting Undulator With Variable Polarization Direction for the European FEL”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 499-501. doi:10.18429/JACoW-FEL2019-WEP076
%\cite{YLi:FEL19-WEP076} \bibitem{YLi:FEL19-WEP076} Y. Li and R. Rossmanith, \textquotedblleft{A Superconducting Undulator With Variable Polarization Direction for the European FEL}\textquotedblright, in \emph{Proc. FEL’19}, Hamburg, Germany, Aug. 2019, pp. 499--501. \url{doi:10.18429/JACoW-FEL2019-WEP076}
@inproceedings{yli:fel19-wep076, author = {Y. Li and R. Rossmanith}, title = {{A Superconducting Undulator With Variable Polarization Direction for the European FEL}}, booktitle = {Proc. FEL'19}, pages = {499--501}, paper = {WEP076}, venue = {Hamburg, Germany, Aug. 2019}, publisher = {JACoW Publishing, Geneva, Switzerland}, doi = {10.18429/JACoW-FEL2019-WEP076}, url = {https://jacow.org/fel2019/papers/WEP076.pdf}, language = {english} }