The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{schneidmiller:fel2019-tup059} \bibitem{schneidmiller:fel2019-tup059} E. Schneidmiller and M.V. Yurkov, \textquotedblleft{Influence of Energy Chirp in the Electron Beam and Undulator Tapering on Spatial Properties of the Radiation From Seeded and SASE FEL}\textquotedblright, % --- abbreviated form (published paper) - JACoW template Feb 2018 --- in \emph{Proc. FEL'19}, Hamburg, Germany, Aug. 2019, pp. 184--186. \url{doi:10.18429/JACoW-FEL2019-TUP059} % --- additional material -ISSN/ISBN-- % ISBN: 978-3-95450-210-3, ISSN: ""