[n] A. H. Botha et al., “Modification of the Extraction System of the Pretoria Cyclotron”, in Proc. Cyclotrons'84, East Lansing, MI, USA, Apr.-May 1984, paper B33, pp. 137-140.
%\cite{Botha:Cyclotrons84-B33} \bibitem{Botha:Cyclotrons84-B33} A. H. Botha \emph{et al.}, \textquotedblleft{Modification of the Extraction System of the Pretoria Cyclotron}\textquotedblright, in \emph{Proc. Cyclotrons’84}, East Lansing, MI, USA, Apr.-May 1984, paper B33, pp. 137--140.
@inproceedings{botha:cyclotrons84-b33, author = {A. H. Botha and others}, title = {{Modification of the Extraction System of the Pretoria Cyclotron}}, booktitle = {Proc. Cyclotrons'84}, pages = {137--140}, paper = {B33}, venue = {East Lansing, MI, USA, Apr.-May 1984}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/c84/papers/B33.pdf}, language = {english} }