The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
Z. Zhao, L.J. Chen, Q.K. Jia, and H.T. Li, “Power Enhancement of Free-Electron Lasers Oscillators With the Natural Gradient of a Planar Undulators”, in Proc. 9th Int. Particle Accelerator Conf. (IPAC'18), Vancouver, BC, Canada, Apr. 4,, pp. 4632-4634, doi:10.18429/JACoW-IPAC2018-THPMK138