[n] T. J. Fessenden et al., “The Experimental Test Accelerator (ETA) II”, in Proc. PAC'81, Washington D.C., USA, Mar. 1981, pp. 3401-3404.
%\cite{Fessenden:PAC81} \bibitem{Fessenden:PAC81} T. J. Fessenden \emph{et al.}, \textquotedblleft{The Experimental Test Accelerator (ETA) II}\textquotedblright, in \emph{Proc. PAC’81}, Washington D.C., USA, Mar. 1981, pp. 3401--3404.
@inproceedings{fessenden:pac81, author = {T. J. Fessenden and others}, title = {{The Experimental Test Accelerator (ETA) II}}, booktitle = {Proc. PAC'81}, pages = {3401--3404}, paper = {}, venue = {Washington D.C., USA, Mar. 1981}, publisher = {JACoW Publishing, Geneva, Switzerland}, language = {english} }