[n] L. Calabretta et al., “Beam-Chopping System for LNS Superconducting Cyclotron”, in Proc. Cyclotrons'98, Caen, France, Jun. 1998, paper B-34, pp. 275-278.
%\cite{Calabretta:Cyclotrons98-B-34} \bibitem{Calabretta:Cyclotrons98-B-34} L. Calabretta \emph{et al.}, \textquotedblleft{Beam-Chopping System for LNS Superconducting Cyclotron}\textquotedblright, in \emph{Proc. Cyclotrons’98}, Caen, France, Jun. 1998, paper B--34, pp. 275--278.
@inproceedings{calabretta:cyclotrons98-b-34, author = {L. Calabretta and others}, title = {{Beam-Chopping System for LNS Superconducting Cyclotron}}, booktitle = {Proc. Cyclotrons'98}, pages = {275--278}, paper = {B-34}, venue = {Caen, France, Jun. 1998}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/c98/papers/B-34.pdf}, language = {english} }