The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
I.V. Agapov, Y.-C. Chae, and W. Hillert, “Low Gain FEL Oscillator Option for PETRA IV”, in Proc. 9th Int. Particle Accelerator Conf. (IPAC'18), Vancouver, BC, Canada, Apr. 4,, pp. 1420-1422, doi:10.18429/JACoW-IPAC2018-TUPMF069