[n] P. Axel et al., “Plans for a Two Stage 450 MeV Cascade Microtron”, in Proc. PAC'81, Washington D.C., USA, Mar. 1981, pp. 2113-2116.
%\cite{Axel:PAC81} \bibitem{Axel:PAC81} P. Axel \emph{et al.}, \textquotedblleft{Plans for a Two Stage 450 MeV Cascade Microtron}\textquotedblright, in \emph{Proc. PAC’81}, Washington D.C., USA, Mar. 1981, pp. 2113--2116.
@inproceedings{axel:pac81, author = {P. Axel and others}, title = {{Plans for a Two Stage 450 MeV Cascade Microtron}}, booktitle = {Proc. PAC'81}, pages = {2113--2116}, paper = {}, venue = {Washington D.C., USA, Mar. 1981}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }