[n] E. Hoyer et al., “The U5.0 Undulator for the ALS”, in Proc. PAC'91, San Francisco, CA, USA, May 1991, pp. 2721-2724.
%\cite{Hoyer:PAC91} \bibitem{Hoyer:PAC91} E. Hoyer \emph{et al.}, \textquotedblleft{The U5.0 Undulator for the ALS}\textquotedblright, in \emph{Proc. PAC’91}, San Francisco, CA, USA, May 1991, pp. 2721--2724.
@inproceedings{hoyer:pac91, author = {E. Hoyer and others}, title = {{The U5.0 Undulator for the ALS}}, booktitle = {Proc. PAC'91}, pages = {2721--2724}, paper = {}, venue = {San Francisco, CA, USA, May 1991}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }