[n] K. W. Ehlers, “Design Considerations for High-Intensity Negative-Ion Sources”, in Proc. PAC'65, Washington D.C., USA, Mar. 1965, pp. 811-817.
%\cite{Ehlers:PAC65} \bibitem{Ehlers:PAC65} K. W. Ehlers, \textquotedblleft{Design Considerations for High-Intensity Negative-Ion Sources}\textquotedblright, in \emph{Proc. PAC’65}, Washington D.C., USA, Mar. 1965, pp. 811--817.
@inproceedings{ehlers:pac65, author = {K. W. Ehlers}, title = {{Design Considerations for High-Intensity Negative-Ion Sources}}, booktitle = {Proc. PAC'65}, pages = {811--817}, paper = {}, venue = {Washington D.C., USA}, series = {Particle Accelerator Conference}, number = {1}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {6}, year = {1965}, language = {english} }