The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
G. Olry, "Recent Progress of ESS Spoke and Elliptical Cryomodules", in Proc. 17th International Conference on RF Superconductivity, Whistler, BC, Canada, 13-18, 2015, paper TUAA06, pp. 474-480, ISBN: 978-3-95450-178-6, doi:10.18429/JACoW-SRF2015-TUAA06, http://srf2015.vrws.de/papers/tuaa06.pdf, 2015.