The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
M. Behtouei, L. Faillace, M. Migliorati, L. Palumbo, and B. Spataro, “New Analytical Derivation of Group Velocity in TW Accelerating Structures”, in Proc. IPAC'19, Melbourne, Australia, May 2019, pp. 155-158. doi:10.18429/JACoW-IPAC2019-MOPGW030