The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
G. Stupakov, “Generation of a Wakefield Undulator in Plasma With Transverse Density Gradient”, presented at the 60th ICFA Advanced Beam Dynamics Workshop on Future Light Sources (FLS'18), Shanghai, China, Mar. 2018, paper THA2WC02, unpublished.