[n] D. Sagan, S. Krishnagopal, and R. Siemann, “Resonances in the Beam-Beam Interaction Due to a Finite Crossing Angle”, in Proc. EPAC'90, Nice, France, Jun. 1990, pp. 1649-1652.
%\cite{Sagan:EPAC90} \bibitem{Sagan:EPAC90} D. Sagan, S. Krishnagopal, and R. Siemann, \textquotedblleft{Resonances in the Beam-Beam Interaction Due to a Finite Crossing Angle}\textquotedblright, in \emph{Proc. EPAC’90}, Nice, France, Jun. 1990, pp. 1649--1652.
@inproceedings{sagan:epac90, author = {D. Sagan and S. Krishnagopal and R. Siemann}, title = {{Resonances in the Beam-Beam Interaction Due to a Finite Crossing Angle}}, booktitle = {Proc. EPAC'90}, pages = {1649--1652}, paper = {}, venue = {Nice, France, Jun. 1990}, series = {European Particle Accelerator Conference}, number = {2}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }