[n] U. Ratzinger, “The IH-Structure and Its Capability to Accelerate High Current Beams”, in Proc. PAC'91, San Francisco, CA, USA, May 1991, pp. 567-572.
%\cite{Ratzinger:PAC91} \bibitem{Ratzinger:PAC91} U. Ratzinger, \textquotedblleft{The IH-Structure and Its Capability to Accelerate High Current Beams}\textquotedblright, in \emph{Proc. PAC’91}, San Francisco, CA, USA, May 1991, pp. 567--572.
@inproceedings{ratzinger:pac91, author = {U. Ratzinger}, title = {{The IH-Structure and Its Capability to Accelerate High Current Beams}}, booktitle = {Proc. PAC'91}, pages = {567--572}, paper = {}, venue = {San Francisco, CA, USA, May 1991}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }