[n] V. N. Zapolsky et al., “IHEP Polarized Proton Beam”, in Proc. PAC'93, Washington D.C., USA, Mar. 1993, pp. 454-457.
%\cite{Zapolsky:PAC93} \bibitem{Zapolsky:PAC93} V. N. Zapolsky \emph{et al.}, \textquotedblleft{IHEP Polarized Proton Beam}\textquotedblright, in \emph{Proc. PAC’93}, Washington D.C., USA, Mar. 1993, pp. 454--457.
@inproceedings{zapolsky:pac93, author = {V. N. Zapolsky and others}, title = {{IHEP Polarized Proton Beam}}, booktitle = {Proc. PAC'93}, pages = {454--457}, paper = {}, venue = {Washington D.C., USA, Mar. 1993}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }