[n] R. L. Sheffield, “High-Brightness Electron Injectors: A Review”, in Proc. PAC'89, Chicago, IL, USA, Mar. 1989, pp. 1098-1103.
%\cite{Sheffield:PAC89} \bibitem{Sheffield:PAC89} R. L. Sheffield, \textquotedblleft{High-Brightness Electron Injectors: A Review}\textquotedblright, in \emph{Proc. PAC’89}, Chicago, IL, USA, Mar. 1989, pp. 1098--1103.
@inproceedings{sheffield:pac89, author = {R. L. Sheffield}, title = {{High-Brightness Electron Injectors: A Review}}, booktitle = {Proc. PAC'89}, pages = {1098--1103}, paper = {}, venue = {Chicago, IL, USA, Mar. 1989}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }