[n] H. Frese, G. Hochweller, F. Peters, and K. Wille, “PETRA Control System”, in Proc. PAC'77, Chicago, IL, USA, Mar. 1977, pp. 1792-1795.
%\cite{Frese:PAC77} \bibitem{Frese:PAC77} H. Frese, G. Hochweller, F. Peters, and K. Wille, \textquotedblleft{PETRA Control System}\textquotedblright, in \emph{Proc. PAC’77}, Chicago, IL, USA, Mar. 1977, pp. 1792--1795.
@inproceedings{frese:pac77, author = {H. Frese and G. Hochweller and F. Peters and K. Wille}, title = {{PETRA Control System}}, booktitle = {Proc. PAC'77}, pages = {1792--1795}, paper = {}, venue = {Chicago, IL, USA, Mar. 1977}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }