[n] D. E. Johnson, “Linear Beam-Beam Tune Shift Estimates for the Tevatron Collider”, in Proc. PAC'89, Chicago, IL, USA, Mar. 1989, pp. 857-860.
%\cite{Johnson:PAC89} \bibitem{Johnson:PAC89} D. E. Johnson, \textquotedblleft{Linear Beam-Beam Tune Shift Estimates for the Tevatron Collider}\textquotedblright, in \emph{Proc. PAC’89}, Chicago, IL, USA, Mar. 1989, pp. 857--860.
@inproceedings{johnson:pac89, author = {D. E. Johnson}, title = {{Linear Beam-Beam Tune Shift Estimates for the Tevatron Collider}}, booktitle = {Proc. PAC'89}, pages = {857--860}, paper = {}, venue = {Chicago, IL, USA, Mar. 1989}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }