[n] H.-D. Nuhn et al., “A 2-4 nm Linac Coherent Light Source (LCLS) Using the SLAC Linac”, in Proc. PAC'93, Washington D.C., USA, Mar. 1993, pp. 1445-1448.
%\cite{H.-D:PAC93} \bibitem{H.-D:PAC93} H.-D. Nuhn \emph{et al.}, \textquotedblleft{A 2-4 nm Linac Coherent Light Source (LCLS) Using the SLAC Linac}\textquotedblright, in \emph{Proc. PAC’93}, Washington D.C., USA, Mar. 1993, pp. 1445--1448.
@inproceedings{h.-d:pac93, author = {H.-D. Nuhn and others}, title = {{A 2-4 nm Linac Coherent Light Source (LCLS) Using the SLAC Linac}}, booktitle = {Proc. PAC'93}, pages = {1445--1448}, paper = {}, venue = {Washington D.C., USA, Mar. 1993}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }