[n] D. K. Olsen et al., “Recent Developments at the Holifield Heavy Ion Research Facility”, in Proc. EPAC'90, Nice, France, Jun. 1990, pp. 452-455.
%\cite{Olsen:EPAC90} \bibitem{Olsen:EPAC90} D. K. Olsen \emph{et al.}, \textquotedblleft{Recent Developments at the Holifield Heavy Ion Research Facility}\textquotedblright, in \emph{Proc. EPAC’90}, Nice, France, Jun. 1990, pp. 452--455.
@inproceedings{olsen:epac90, author = {D. K. Olsen and others}, title = {{Recent Developments at the Holifield Heavy Ion Research Facility}}, booktitle = {Proc. EPAC'90}, pages = {452--455}, paper = {}, venue = {Nice, France, Jun. 1990}, series = {European Particle Accelerator Conference}, number = {2}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }