[n] P. Sprangle and A. Ting, “Gain of an FEL with an Unmatched Electron Beam”, in Proc. PAC'87, Washington D.C., USA, Mar. 1987, pp. 209-212.
%\cite{Sprangle:PAC87} \bibitem{Sprangle:PAC87} P. Sprangle and A. Ting, \textquotedblleft{Gain of an FEL with an Unmatched Electron Beam}\textquotedblright, in \emph{Proc. PAC’87}, Washington D.C., USA, Mar. 1987, pp. 209--212.
@inproceedings{sprangle:pac87, author = {P. Sprangle and A. Ting}, title = {{Gain of an FEL with an Unmatched Electron Beam}}, booktitle = {Proc. PAC'87}, pages = {209--212}, paper = {}, venue = {Washington D.C., USA, Mar. 1987}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }