[n] H. Hartwig and J. Kouptsidis, “New Techniques for the Petra Vacuum System”, in Proc. PAC'77, Chicago, IL, USA, Mar. 1977, pp. 1248-1251.
%\cite{Hartwig:PAC77} \bibitem{Hartwig:PAC77} H. Hartwig and J. Kouptsidis, \textquotedblleft{New Techniques for the Petra Vacuum System}\textquotedblright, in \emph{Proc. PAC’77}, Chicago, IL, USA, Mar. 1977, pp. 1248--1251.
@inproceedings{hartwig:pac77, author = {H. Hartwig and J. Kouptsidis}, title = {{New Techniques for the Petra Vacuum System}}, booktitle = {Proc. PAC'77}, pages = {1248--1251}, paper = {}, venue = {Chicago, IL, USA, Mar. 1977}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }