The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
E. Schneidmiller and M.V. Yurkov, “Influence of Energy Chirp in the Electron Beam and Undulator Tapering on Spatial Properties of the Radiation From Seeded and SASE FEL”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 184-186. doi:10.18429/JACoW-FEL2019-TUP059