[n] M. Felber et al., “Upgrade of the Optical Synchronization System for FLASH II”, in Proc. FEL'11, Shanghai, China, Aug. 2011, paper THPA14, pp. 496-498.
%\cite{Felber:FEL11-THPA14} \bibitem{Felber:FEL11-THPA14} M. Felber \emph{et al.}, \textquotedblleft{Upgrade of the Optical Synchronization System for FLASH II}\textquotedblright, in \emph{Proc. FEL’11}, Shanghai, China, Aug. 2011, paper THPA14, pp. 496--498.
@inproceedings{felber:fel11-thpa14, author = {M. Felber and others}, title = {{Upgrade of the Optical Synchronization System for FLASH II}}, booktitle = {Proc. FEL'11}, pages = {496--498}, paper = {THPA14}, venue = {Shanghai, China, Aug. 2011}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/FEL2011/papers/THPA14.pdf}, language = {english} }