[n] W. Sch?Âllkopf et al., “Status of the Fritz Haber Institute THz FEL”, in Proc. FEL'11, Shanghai, China, Aug. 2011, paper TUPB30, pp. 315-317.
%\cite{Sch?Âllkopf:FEL11-TUPB30} \bibitem{Sch?Âllkopf:FEL11-TUPB30} W. Sch?Âllkopf \emph{et al.}, \textquotedblleft{Status of the Fritz Haber Institute THz FEL}\textquotedblright, in \emph{Proc. FEL’11}, Shanghai, China, Aug. 2011, paper TUPB30, pp. 315--317.
@inproceedings{sch?âllkopf:fel11-tupb30, author = {W. Sch?Âllkopf and others}, title = {{Status of the Fritz Haber Institute THz FEL}}, booktitle = {Proc. FEL'11}, pages = {315--317}, paper = {TUPB30}, venue = {Shanghai, China, Aug. 2011}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/FEL2011/papers/TUPB30.pdf}, language = {english} }