[n] S. Laycock et al., “New Developments in Ion Sources at IBA”, in Proc. EPAC'90, Nice, France, Jun. 1990, pp. 653-656.
%\cite{Laycock:EPAC90} \bibitem{Laycock:EPAC90} S. Laycock \emph{et al.}, \textquotedblleft{New Developments in Ion Sources at IBA}\textquotedblright, in \emph{Proc. EPAC’90}, Nice, France, Jun. 1990, pp. 653--656.
@inproceedings{laycock:epac90, author = {S. Laycock and others}, title = {{New Developments in Ion Sources at IBA}}, booktitle = {Proc. EPAC'90}, pages = {653--656}, paper = {}, venue = {Nice, France, Jun. 1990}, series = {European Particle Accelerator Conference}, number = {2}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }