[n] S. Penner, “RF Linac Based Free Electron Lasers”, in Proc. PAC'87, Washington D.C., USA, Mar. 1987, pp. 183-189.
%\cite{Penner:PAC87} \bibitem{Penner:PAC87} S. Penner, \textquotedblleft{RF Linac Based Free Electron Lasers}\textquotedblright, in \emph{Proc. PAC’87}, Washington D.C., USA, Mar. 1987, pp. 183--189.
@inproceedings{penner:pac87, author = {S. Penner}, title = {{RF Linac Based Free Electron Lasers}}, booktitle = {Proc. PAC'87}, pages = {183--189}, paper = {}, venue = {Washington D.C., USA, Mar. 1987}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }