The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
T.Y. Chung and C.-S. Hwang, “Conceptual Design of a Permanent Magnet Undulator for Fast Pulse-to-Pulse Polarization Switching in an FEL”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 545-548. doi:10.18429/JACoW-FEL2019-WEP100