The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
J. Bahrdt, K. Holldack, P. Kuske, R. Müller, M. Scheer, and P.O. Schmid, “Undulator Photon Beams with Orbital Angular Momentum”, in Proc. 5th Int. Particle Accelerator Conf. (IPAC'14), Dresden, Germany, June 2014, pp. 213-215, doi:10.18429/JACoW-IPAC2014-MOPRO057