[n] D. Li et al., “Experimental Results of the Betatron Sum Resonance”, in Proc. PAC'93, Washington D.C., USA, Mar. 1993, pp. 227-230.
%\cite{Li:PAC93} \bibitem{Li:PAC93} D. Li \emph{et al.}, \textquotedblleft{Experimental Results of the Betatron Sum Resonance}\textquotedblright, in \emph{Proc. PAC’93}, Washington D.C., USA, Mar. 1993, pp. 227--230.
@inproceedings{li:pac93, author = {D. Li and others}, title = {{Experimental Results of the Betatron Sum Resonance}}, booktitle = {Proc. PAC'93}, pages = {227--230}, paper = {}, venue = {Washington D.C., USA, Mar. 1993}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }