[n] W. Sch?Âllkopf et al., “The IR and THz Free Electron Laser at the Fritz-Haber-Institut”, in Proc. FEL'13, New York, NY, USA, Aug. 2013, paper WEPSO62, pp. 657-660.
%\cite{Sch?Âllkopf:FEL13-WEPSO62} \bibitem{Sch?Âllkopf:FEL13-WEPSO62} W. Sch?Âllkopf \emph{et al.}, \textquotedblleft{The IR and THz Free Electron Laser at the Fritz-Haber-Institut}\textquotedblright, in \emph{Proc. FEL’13}, New York, NY, USA, Aug. 2013, paper WEPSO62, pp. 657--660.
@inproceedings{sch?âllkopf:fel13-wepso62, author = {W. Sch?Âllkopf and others}, title = {{The IR and THz Free Electron Laser at the Fritz-Haber-Institut}}, booktitle = {Proc. FEL'13}, pages = {657--660}, paper = {WEPSO62}, venue = {New York, NY, USA, Aug. 2013}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/FEL2013/papers/WEPSO62.pdf}, language = {english} }