[n] R. L. Sheffield, “Progress in Photoinjectors for Linacs”, in Proc. LINAC'90, Albuquerque, NM, USA, Sep. 1990, paper TU103, pp. 269-272.
%\cite{Sheffield:LINAC90-TU103} \bibitem{Sheffield:LINAC90-TU103} R. L. Sheffield, \textquotedblleft{Progress in Photoinjectors for Linacs}\textquotedblright, in \emph{Proc. LINAC’90}, Albuquerque, NM, USA, Sep. 1990, paper TU103, pp. 269--272.
@inproceedings{sheffield:linac90-tu103, author = {R. L. Sheffield}, title = {{Progress in Photoinjectors for Linacs}}, booktitle = {Proc. LINAC'90}, pages = {269--272}, paper = {TU103}, venue = {Albuquerque, NM, USA, Sep. 1990}, series = {Linear Accelerator Conference}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/l90/papers/TU103.pdf}, language = {english} }