[n] G. F. Dell and G. Parzen, “Aperture Determination by Long Term and Multiparticle Tracking”, in Proc. PAC'91, San Francisco, CA, USA, May 1991, pp. 288-291.
%\cite{Dell:PAC91} \bibitem{Dell:PAC91} G. F. Dell and G. Parzen, \textquotedblleft{Aperture Determination by Long Term and Multiparticle Tracking}\textquotedblright, in \emph{Proc. PAC’91}, San Francisco, CA, USA, May 1991, pp. 288--291.
@inproceedings{dell:pac91, author = {G. F. Dell and G. Parzen}, title = {{Aperture Determination by Long Term and Multiparticle Tracking}}, booktitle = {Proc. PAC'91}, pages = {288--291}, paper = {}, venue = {San Francisco, CA, USA, May 1991}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }