A compact transportable Josephson voltage standard Hamilton, C. A. ; Burroughs, C. J. ; Kupferman, S. L. ; Naujoks, G. A. ; Vickery, A. Abstract Publication: IEEE Transactions on Instrumentation Measurement Pub Date: April 1997 DOI: 10.1109/19.571821 Bibcode: 1997ITIM...46..237H