The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
S. Spampinati et al., “Generation and Measurement of Intense Few-Femtosecond Superradiant Soft X-Ray Free Electron Laser Pulses”, presented at the 39th Free Electron Laser Conf. (FEL'19), Hamburg, Germany, Aug. 2019, paper TUB04, unpublished.