[n] J. W. Lewellen, “Future Directions in Electron Sources”, in Proc. PAC'05, Knoxville, TN, USA, May 2005, paper MOPB007, pp. 563-567.
%\cite{Lewellen:PAC05-MOPB007} \bibitem{Lewellen:PAC05-MOPB007} J. W. Lewellen, \textquotedblleft{Future Directions in Electron Sources}\textquotedblright, in \emph{Proc. PAC’05}, Knoxville, TN, USA, May 2005, paper MOPB007, pp. 563--567.
@inproceedings{lewellen:pac05-mopb007, author = {J. W. Lewellen}, title = {{Future Directions in Electron Sources}}, booktitle = {Proc. PAC'05}, pages = {563--567}, paper = {MOPB007}, venue = {Knoxville, TN, USA, May 2005}, series = {Particle Accelerator Conference}, number = {21}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/p05/papers/MOPB007.pdf}, language = {english} }