[n] A. Piwinski, “Computer Simulations of the Beam-Beam Interaction and Measurements with PETRA”, in Proc. PAC'81, Washington D.C., USA, Mar. 1981, pp. 2440-2443.
%\cite{Piwinski:PAC81} \bibitem{Piwinski:PAC81} A. Piwinski, \textquotedblleft{Computer Simulations of the Beam-Beam Interaction and Measurements with PETRA}\textquotedblright, in \emph{Proc. PAC’81}, Washington D.C., USA, Mar. 1981, pp. 2440--2443.
@inproceedings{piwinski:pac81, author = {A. Piwinski}, title = {{Computer Simulations of the Beam-Beam Interaction and Measurements with PETRA}}, booktitle = {Proc. PAC'81}, pages = {2440--2443}, paper = {}, venue = {Washington D.C., USA, Mar. 1981}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }