[n] J. Irwin et al., “The Optics of the Final Focus Test Beam”, in Proc. PAC'91, San Francisco, CA, USA, May 1991, pp. 2058-2061.
%\cite{Irwin:PAC91} \bibitem{Irwin:PAC91} J. Irwin \emph{et al.}, \textquotedblleft{The Optics of the Final Focus Test Beam}\textquotedblright, in \emph{Proc. PAC’91}, San Francisco, CA, USA, May 1991, pp. 2058--2061.
@inproceedings{irwin:pac91, author = {J. Irwin and others}, title = {{The Optics of the Final Focus Test Beam}}, booktitle = {Proc. PAC'91}, pages = {2058--2061}, paper = {}, venue = {San Francisco, CA, USA, May 1991}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }