The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
V. Balandin et al., “First Characterization of the Photon Beam at the European XFEL in July, 2017”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 180-183. doi:10.18429/JACoW-FEL2019-TUP058