[n] M. Tigner, B. Wiik, and F. Willeke, “An Electron-proton Collider in the TeV Range”, in Proc. PAC'91, San Francisco, CA, USA, May 1991, pp. 2910-2913.
%\cite{Tigner:PAC91} \bibitem{Tigner:PAC91} M. Tigner, B. Wiik, and F. Willeke, \textquotedblleft{An Electron-proton Collider in the TeV Range}\textquotedblright, in \emph{Proc. PAC’91}, San Francisco, CA, USA, May 1991, pp. 2910--2913.
@inproceedings{tigner:pac91, author = {M. Tigner and B. Wiik and F. Willeke}, title = {{An Electron-proton Collider in the TeV Range}}, booktitle = {Proc. PAC'91}, pages = {2910--2913}, paper = {}, venue = {San Francisco, CA, USA, May 1991}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }