[n] J. G. Alessi, “State of the Art in Polarized Proton Sources”, in Proc. PAC'87, Washington D.C., USA, Mar. 1987, pp. 249-254.
%\cite{Alessi:PAC87} \bibitem{Alessi:PAC87} J. G. Alessi, \textquotedblleft{State of the Art in Polarized Proton Sources}\textquotedblright, in \emph{Proc. PAC’87}, Washington D.C., USA, Mar. 1987, pp. 249--254.
@inproceedings{alessi:pac87, author = {J. G. Alessi}, title = {{State of the Art in Polarized Proton Sources}}, booktitle = {Proc. PAC'87}, pages = {249--254}, paper = {}, venue = {Washington D.C., USA, Mar. 1987}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }