[n] D. K. Olsen et al., “HISTRAP Prototype Hardware Studies”, in Proc. Cyclotrons'89, Berlin, Germany, May 1989, paper C-04, pp. 70-75.
%\cite{Olsen:Cyclotrons89-C-04} \bibitem{Olsen:Cyclotrons89-C-04} D. K. Olsen \emph{et al.}, \textquotedblleft{HISTRAP Prototype Hardware Studies}\textquotedblright, in \emph{Proc. Cyclotrons’89}, Berlin, Germany, May 1989, paper C--04, pp. 70--75.
@inproceedings{olsen:cyclotrons89-c-04, author = {D. K. Olsen and others}, title = {{HISTRAP Prototype Hardware Studies}}, booktitle = {Proc. Cyclotrons'89}, pages = {70--75}, paper = {C-04}, venue = {Berlin, Germany, May 1989}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/c89/papers/C-04.pdf}, language = {english} }