[n] E. Schneidmiller et al., “Two-Color Operation of FLASH2 Undulator”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 168-171. doi:10.18429/JACoW-FEL2019-TUP055
%\cite{Schneidmiller:FEL19-TUP055} \bibitem{Schneidmiller:FEL19-TUP055} E. Schneidmiller \emph{et al.}, \textquotedblleft{Two-Color Operation of FLASH2 Undulator}\textquotedblright, in \emph{Proc. FEL’19}, Hamburg, Germany, Aug. 2019, pp. 168--171. \url{doi:10.18429/JACoW-FEL2019-TUP055}
@inproceedings{schneidmiller:fel19-tup055, author = {E. Schneidmiller and others}, title = {{Two-Color Operation of FLASH2 Undulator}}, booktitle = {Proc. FEL'19}, pages = {168--171}, paper = {TUP055}, venue = {Hamburg, Germany, Aug. 2019}, publisher = {JACoW Publishing, Geneva, Switzerland}, doi = {10.18429/JACoW-FEL2019-TUP055}, url = {https://jacow.org/fel2019/papers/TUP055.pdf}, language = {english} }