[n] W. P. Johnson and P. K. Sigg, “Improvements in the Michigan State University Cyclotron RF System”, in Proc. PAC'69, Washington D.C., USA, Mar. 1969, pp. 492-495.
%\cite{Johnson:PAC69} \bibitem{Johnson:PAC69} W. P. Johnson and P. K. Sigg, \textquotedblleft{Improvements in the Michigan State University Cyclotron RF System}\textquotedblright, in \emph{Proc. PAC’69}, Washington D.C., USA, Mar. 1969, pp. 492--495.
@inproceedings{johnson:pac69, author = {W. P. Johnson and P. K. Sigg}, title = {{Improvements in the Michigan State University Cyclotron RF System}}, booktitle = {Proc. PAC'69}, pages = {492--495}, paper = {}, venue = {Washington D.C., USA}, series = {Particle Accelerator Conference}, number = {3}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {6}, year = {1969}, language = {english} }