[n] T. Antonsen and C. Menyuk, “Quadrupole Free Electron Laser”, in Proc. PAC'87, Washington D.C., USA, Mar. 1987, pp. 218-221.
%\cite{Antonsen:PAC87} \bibitem{Antonsen:PAC87} T. Antonsen and C. Menyuk, \textquotedblleft{Quadrupole Free Electron Laser}\textquotedblright, in \emph{Proc. PAC’87}, Washington D.C., USA, Mar. 1987, pp. 218--221.
@inproceedings{antonsen:pac87, author = {T. Antonsen and C. Menyuk}, title = {{Quadrupole Free Electron Laser}}, booktitle = {Proc. PAC'87}, pages = {218--221}, paper = {}, venue = {Washington D.C., USA, Mar. 1987}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }