The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
E. Allaria et al., “First Lasing of a Free Electron Laser in the Soft X-Ray Spectral Range with Echo Enabled Harmonic Generation”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 7-10. doi:10.18429/JACoW-FEL2019-MOA02