[n] H. Hahn and S. Tepikian, “Perturbation Treatment of the Longitudinal Coupling Impedance of a Toroidal Beam Tube”, in Proc. PAC'91, San Francisco, CA, USA, May 1991, pp. 1707-1710.
%\cite{Hahn:PAC91} \bibitem{Hahn:PAC91} H. Hahn and S. Tepikian, \textquotedblleft{Perturbation Treatment of the Longitudinal Coupling Impedance of a Toroidal Beam Tube}\textquotedblright, in \emph{Proc. PAC’91}, San Francisco, CA, USA, May 1991, pp. 1707--1710.
@inproceedings{hahn:pac91, author = {H. Hahn and S. Tepikian}, title = {{Perturbation Treatment of the Longitudinal Coupling Impedance of a Toroidal Beam Tube}}, booktitle = {Proc. PAC'91}, pages = {1707--1710}, paper = {}, venue = {San Francisco, CA, USA, May 1991}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }