[n] P. Sprangle, H. Freund, B. Hafizi, and J. Penano, “Optical Beam Quality in Free-Electron Lasers”, in Proc. FEL'06, Berlin, Germany, Aug.-Sep. 2006, paper MOPPH044, pp. 134-137.
%\cite{Sprangle:FEL06-MOPPH044} \bibitem{Sprangle:FEL06-MOPPH044} P. Sprangle, H. Freund, B. Hafizi, and J. Penano, \textquotedblleft{Optical Beam Quality in Free-Electron Lasers}\textquotedblright, in \emph{Proc. FEL’06}, Berlin, Germany, Aug.-Sep. 2006, paper MOPPH044, pp. 134--137.
@inproceedings{sprangle:fel06-mopph044, author = {P. Sprangle and H. Freund and B. Hafizi and J. Penano}, title = {{Optical Beam Quality in Free-Electron Lasers}}, booktitle = {Proc. FEL'06}, pages = {134--137}, paper = {MOPPH044}, venue = {Berlin, Germany, Aug.-Sep. 2006}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/f06/papers/MOPPH044.pdf}, language = {english} }