The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
S. Lederer, F. Brinker, L. Monaco, S. Schreiber, and D. Sertore, “Update on the Photocathode Lifetime at FLASH and European XFEL”, in Proc. FEL'19, Hamburg, Germany, Aug. 2019, pp. 427-429. doi:10.18429/JACoW-FEL2019-WEP047