[n] S. Krishnagopal and R. Siemann, “The Coherent Beam-Beam Interaction”, in Proc. PAC'91, San Francisco, CA, USA, May 1991, pp. 1071-1074.
%\cite{Krishnagopal:PAC91} \bibitem{Krishnagopal:PAC91} S. Krishnagopal and R. Siemann, \textquotedblleft{The Coherent Beam-Beam Interaction}\textquotedblright, in \emph{Proc. PAC’91}, San Francisco, CA, USA, May 1991, pp. 1071--1074.
@inproceedings{krishnagopal:pac91, author = {S. Krishnagopal and R. Siemann}, title = {{The Coherent Beam-Beam Interaction}}, booktitle = {Proc. PAC'91}, pages = {1071--1074}, paper = {}, venue = {San Francisco, CA, USA, May 1991}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }