The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
M. Wiencek, K. Kasprzak, D. Kostin, D. Reschke, N. Walker, and A. Zwozniak, "Update and Status of Test Results of the XFEL Series Accelerator Modules", in Proc. 17th International Conference on RF Superconductivity, Whistler, BC, Canada, 13-18, 2015, paper MOPB080, pp. 319-323, ISBN: 978-3-95450-178-6, doi:10.18429/JACoW-SRF2015-MOPB080, http://srf2015.vrws.de/papers/mopb080.pdf, 2015.