TY - CONF AU - Donald McDonald AU - A. Risley AU - J. Cupp C2 - Proc., 13th Intl. Conf. Low Temperature Physics, Boulder, CO, USA DA - 1974-12-31 00:12:00 LA - en PB - Proc., 13th Intl. Conf. Low Temperature Physics, Boulder, CO, USA PY - 1974 TI - The Relationship of Josephson Junctions to a Unified Standard of Length and Time ER -