[n] X. Li et al., “Progress in Preparing a Proof-of-Principle Experiment for THz SASE FEL at PITZ”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 41-44. doi:10.18429/JACoW-FEL2019-TUP002
%\cite{Li:FEL19-TUP002} \bibitem{Li:FEL19-TUP002} X. Li \emph{et al.}, \textquotedblleft{Progress in Preparing a Proof-of-Principle Experiment for THz SASE FEL at PITZ}\textquotedblright, in \emph{Proc. FEL’19}, Hamburg, Germany, Aug. 2019, pp. 41--44. \url{doi:10.18429/JACoW-FEL2019-TUP002}
@inproceedings{li:fel19-tup002, author = {X. Li and others}, title = {{Progress in Preparing a Proof-of-Principle Experiment for THz SASE FEL at PITZ}}, booktitle = {Proc. FEL'19}, pages = {41--44}, paper = {TUP002}, venue = {Hamburg, Germany, Aug. 2019}, publisher = {JACoW Publishing, Geneva, Switzerland}, doi = {10.18429/JACoW-FEL2019-TUP002}, url = {https://jacow.org/fel2019/papers/TUP002.pdf}, language = {english} }