[n] R. Wehrle, S. Kim, and R. Nielsen, “Vacuum System Development Status for the APS Storage Ring”, in Proc. PAC'89, Chicago, IL, USA, Mar. 1989, pp. 583-586.
%\cite{Wehrle:PAC89} \bibitem{Wehrle:PAC89} R. Wehrle, S. Kim, and R. Nielsen, \textquotedblleft{Vacuum System Development Status for the APS Storage Ring}\textquotedblright, in \emph{Proc. PAC’89}, Chicago, IL, USA, Mar. 1989, pp. 583--586.
@inproceedings{wehrle:pac89, author = {R. Wehrle and S. Kim and R. Nielsen}, title = {{Vacuum System Development Status for the APS Storage Ring}}, booktitle = {Proc. PAC'89}, pages = {583--586}, paper = {}, venue = {Chicago, IL, USA, Mar. 1989}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }