[n] M. A. Allen et al., “Relativistic Klystrons”, in Proc. PAC'89, Chicago, IL, USA, Mar. 1989, pp. 1123-1128.
%\cite{Allen:PAC89} \bibitem{Allen:PAC89} M. A. Allen \emph{et al.}, \textquotedblleft{Relativistic Klystrons}\textquotedblright, in \emph{Proc. PAC’89}, Chicago, IL, USA, Mar. 1989, pp. 1123--1128.
@inproceedings{allen:pac89, author = {M. A. Allen and others}, title = {{Relativistic Klystrons}}, booktitle = {Proc. PAC'89}, pages = {1123--1128}, paper = {}, venue = {Chicago, IL, USA, Mar. 1989}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }