[n] C. S. Chien, “Orbits and Nonlinear Effects in Terms of the Field Coefficients in the Median Plane”, in Proc. PAC'69, Washington D.C., USA, Mar. 1969, pp. 192-194.
%\cite{Chien:PAC69} \bibitem{Chien:PAC69} C. S. Chien, \textquotedblleft{Orbits and Nonlinear Effects in Terms of the Field Coefficients in the Median Plane}\textquotedblright, in \emph{Proc. PAC’69}, Washington D.C., USA, Mar. 1969, pp. 192--194.
@inproceedings{chien:pac69, author = {C. S. Chien}, title = {{Orbits and Nonlinear Effects in Terms of the Field Coefficients in the Median Plane}}, booktitle = {Proc. PAC'69}, pages = {192--194}, paper = {}, venue = {Washington D.C., USA}, series = {Particle Accelerator Conference}, number = {3}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {6}, year = {1969}, language = {english} }