The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
W. Liu, “A Novel Optical Undulator Using Array of Pulse-Front Tilted Laser Beams”, presented at the 39th Free Electron Laser Conf. (FEL'19), Hamburg, Germany, Aug. 2019, paper THD04, unpublished.