[n] M. J. Frank, E. Held, and C. R. Wolf, “Columbus - A Simple Ion Source”, in Proc. Cyclotrons'13, Vancouver, Canada, Sep. 2013, paper WEPPT021, pp. 364-365.
%\cite{Frank:Cyclotrons13-WEPPT021} \bibitem{Frank:Cyclotrons13-WEPPT021} M. J. Frank, E. Held, and C. R. Wolf, \textquotedblleft{Columbus - A Simple Ion Source}\textquotedblright, in \emph{Proc. Cyclotrons’13}, Vancouver, Canada, Sep. 2013, paper WEPPT021, pp. 364--365.
@inproceedings{frank:cyclotrons13-weppt021, author = {M. J. Frank and E. Held and C. R. Wolf}, title = {{Columbus - A Simple Ion Source}}, booktitle = {Proc. Cyclotrons'13}, pages = {364--365}, paper = {WEPPT021}, venue = {Vancouver, Canada, Sep. 2013}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/CYCLOTRONS2013/papers/WEPPT021.pdf}, language = {english} }