[n] J. Billan et al., “Measurements of the LEP Coupling Source”, in Proc. EPAC'90, Nice, France, Jun. 1990, pp. 258-261.
%\cite{Billan:EPAC90} \bibitem{Billan:EPAC90} J. Billan \emph{et al.}, \textquotedblleft{Measurements of the LEP Coupling Source}\textquotedblright, in \emph{Proc. EPAC’90}, Nice, France, Jun. 1990, pp. 258--261.
@inproceedings{billan:epac90, author = {J. Billan and others}, title = {{Measurements of the LEP Coupling Source}}, booktitle = {Proc. EPAC'90}, pages = {258--261}, paper = {}, venue = {Nice, France, Jun. 1990}, series = {European Particle Accelerator Conference}, number = {2}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }