[n] F. C. Younger, P. F. Meads, and L. S. B. Ng, “Proton Therapy System”, in Proc. PAC'87, Washington D.C., USA, Mar. 1987, pp. 1997-2000.
%\cite{Younger:PAC87} \bibitem{Younger:PAC87} F. C. Younger, P. F. Meads, and L. S. B. Ng, \textquotedblleft{Proton Therapy System}\textquotedblright, in \emph{Proc. PAC’87}, Washington D.C., USA, Mar. 1987, pp. 1997--2000.
@inproceedings{younger:pac87, author = {F. C. Younger and P. F. Meads and L. S. B. Ng}, title = {{Proton Therapy System}}, booktitle = {Proc. PAC'87}, pages = {1997--2000}, paper = {}, venue = {Washington D.C., USA, Mar. 1987}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }