[n] J. A. Nolen, “Present and Future Superconducting Cyclotrons”, in Proc. PAC'87, Washington D.C., USA, Mar. 1987, pp. 239-245.
%\cite{Nolen:PAC87} \bibitem{Nolen:PAC87} J. A. Nolen, \textquotedblleft{Present and Future Superconducting Cyclotrons}\textquotedblright, in \emph{Proc. PAC’87}, Washington D.C., USA, Mar. 1987, pp. 239--245.
@inproceedings{nolen:pac87, author = {J. A. Nolen}, title = {{Present and Future Superconducting Cyclotrons}}, booktitle = {Proc. PAC'87}, pages = {239--245}, paper = {}, venue = {Washington D.C., USA, Mar. 1987}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }