[n] L. Winkelmann et al., “The European XFEL Photocathode Laser”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 423-426. doi:10.18429/JACoW-FEL2019-WEP046
%\cite{Winkelmann:FEL19-WEP046} \bibitem{Winkelmann:FEL19-WEP046} L. Winkelmann \emph{et al.}, \textquotedblleft{The European XFEL Photocathode Laser}\textquotedblright, in \emph{Proc. FEL’19}, Hamburg, Germany, Aug. 2019, pp. 423--426. \url{doi:10.18429/JACoW-FEL2019-WEP046}
@inproceedings{winkelmann:fel19-wep046, author = {L. Winkelmann and others}, title = {{The European XFEL Photocathode Laser}}, booktitle = {Proc. FEL'19}, pages = {423--426}, paper = {WEP046}, venue = {Hamburg, Germany, Aug. 2019}, publisher = {JACoW Publishing, Geneva, Switzerland}, doi = {10.18429/JACoW-FEL2019-WEP046}, url = {https://jacow.org/fel2019/papers/WEP046.pdf}, language = {english} }