The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
H. Zen, R. Hajima, and H. Ohgaki, “Record High Extraction Efficiency of Free electron Laser Oscillator”, presented at the 12th Int. Particle Acc. Conf. (IPAC'21), Campinas, SP, Brazil, May 2021, paper FRXA05, unpublished.