Luis Palafox, Ralf Behr, Waldemar G. Kürten Ihlenfeld, Franz Müller, Enrico Mohns, Michael Seckelmann, Franz Ahlers. The Josephson-Effect-Based Primary AC Power Standard at the PTB: Progress Report. IEEE T. Instrumentation and Measurement, 58(4):1049-1053, 2009. [doi]
Abstract is missing.