[n] R. Baartman, “Intrinsic Third Order Aberrations in Electrostatic and Magnetic Quadrupoles”, in Proc. PAC'97, Vancouver, Canada, May 1997, paper 4V023, pp. 1415-1417.
%\cite{Baartman:PAC97-4V023} \bibitem{Baartman:PAC97-4V023} R. Baartman, \textquotedblleft{Intrinsic Third Order Aberrations in Electrostatic and Magnetic Quadrupoles}\textquotedblright, in \emph{Proc. PAC’97}, Vancouver, Canada, May 1997, paper 4V023, pp. 1415--1417.
@inproceedings{baartman:pac97-4v023, author = {R. Baartman}, title = {{Intrinsic Third Order Aberrations in Electrostatic and Magnetic Quadrupoles}}, booktitle = {Proc. PAC'97}, pages = {1415--1417}, paper = {4V023}, venue = {Vancouver, Canada, May 1997}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }