[n] O. Groe, “The Performance of the Ultra-high Vacuum System of LEP and the Experience Gained during the First Year of Operation”, in Proc. EPAC'90, Nice, France, Jun. 1990, pp. 337-340.
%\cite{Groe:EPAC90} \bibitem{Groe:EPAC90} O. Groe, \textquotedblleft{The Performance of the Ultra-high Vacuum System of LEP and the Experience Gained during the First Year of Operation}\textquotedblright, in \emph{Proc. EPAC’90}, Nice, France, Jun. 1990, pp. 337--340.
@inproceedings{groe:epac90, author = {O. Groe}, title = {{The Performance of the Ultra-high Vacuum System of LEP and the Experience Gained during the First Year of Operation}}, booktitle = {Proc. EPAC'90}, pages = {337--340}, paper = {}, venue = {Nice, France, Jun. 1990}, series = {European Particle Accelerator Conference}, number = {2}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }