[n] M. Bieler et al., “Thin Film Cathode for a Hollow Beam Gun”, in Proc. EPAC'90, Nice, France, Jun. 1990, pp. 670-673.
%\cite{Bieler:EPAC90} \bibitem{Bieler:EPAC90} M. Bieler \emph{et al.}, \textquotedblleft{Thin Film Cathode for a Hollow Beam Gun}\textquotedblright, in \emph{Proc. EPAC’90}, Nice, France, Jun. 1990, pp. 670--673.
@inproceedings{bieler:epac90, author = {M. Bieler and others}, title = {{Thin Film Cathode for a Hollow Beam Gun}}, booktitle = {Proc. EPAC'90}, pages = {670--673}, paper = {}, venue = {Nice, France, Jun. 1990}, series = {European Particle Accelerator Conference}, number = {2}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }