[n] R. Helm et al., “Recent Improvements in Luminosity at PEP”, in Proc. PAC'83, Santa Fe, NM, USA, Mar. 1983, pp. 2001-2004.
%\cite{Helm:PAC83} \bibitem{Helm:PAC83} R. Helm \emph{et al.}, \textquotedblleft{Recent Improvements in Luminosity at PEP}\textquotedblright, in \emph{Proc. PAC’83}, Santa Fe, NM, USA, Mar. 1983, pp. 2001--2004.
@inproceedings{helm:pac83, author = {R. Helm and others}, title = {{Recent Improvements in Luminosity at PEP}}, booktitle = {Proc. PAC'83}, pages = {2001--2004}, paper = {}, venue = {Santa Fe, NM, USA, Mar. 1983}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }