[n] K. E. Hacker et al., “Design and Drift Performance of the FLASH Master Laser Oscillator RF-Lock”, in Proc. FEL'09, Liverpool, UK, Aug. 2009, paper WEPC69, pp. 663-666.
%\cite{Hacker:FEL09-WEPC69} \bibitem{Hacker:FEL09-WEPC69} K. E. Hacker \emph{et al.}, \textquotedblleft{Design and Drift Performance of the FLASH Master Laser Oscillator RF-Lock}\textquotedblright, in \emph{Proc. FEL’09}, Liverpool, UK, Aug. 2009, paper WEPC69, pp. 663--666.
@inproceedings{hacker:fel09-wepc69, author = {K. E. Hacker and others}, title = {{Design and Drift Performance of the FLASH Master Laser Oscillator RF-Lock}}, booktitle = {Proc. FEL'09}, pages = {663--666}, paper = {WEPC69}, venue = {Liverpool, UK, Aug. 2009}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/FEL2009/papers/WEPC69.pdf}, language = {english} }