[n] G. Guignard, “Beam Optics Requirements and Possible Parameters for Operating LEP”, in Proc. PAC'87, Washington D.C., USA, Mar. 1987, pp. 1364-1367.
%\cite{Guignard:PAC87} \bibitem{Guignard:PAC87} G. Guignard, \textquotedblleft{Beam Optics Requirements and Possible Parameters for Operating LEP}\textquotedblright, in \emph{Proc. PAC’87}, Washington D.C., USA, Mar. 1987, pp. 1364--1367.
@inproceedings{guignard:pac87, author = {G. Guignard}, title = {{Beam Optics Requirements and Possible Parameters for Operating LEP}}, booktitle = {Proc. PAC'87}, pages = {1364--1367}, paper = {}, venue = {Washington D.C., USA, Mar. 1987}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }