[n] F. Schmidt and F. Willeke, “Nonlinear Beam Dynamics Close to Resonances Excited by Sextupole Fields”, in Proc. EPAC'88, Rome, Italy, Jun. 1988, pp. 908-911.
%\cite{Schmidt:EPAC88} \bibitem{Schmidt:EPAC88} F. Schmidt and F. Willeke, \textquotedblleft{Nonlinear Beam Dynamics Close to Resonances Excited by Sextupole Fields}\textquotedblright, in \emph{Proc. EPAC’88}, Rome, Italy, Jun. 1988, pp. 908--911.
@inproceedings{schmidt:epac88, author = {F. Schmidt and F. Willeke}, title = {{Nonlinear Beam Dynamics Close to Resonances Excited by Sextupole Fields}}, booktitle = {Proc. EPAC'88}, pages = {908--911}, paper = {}, venue = {Rome, Italy, Jun. 1988}, series = {European Particle Accelerator Conference}, number = {1}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }