TY - CONF AU - Tang, Yi-hua C2 - Proc. VII Semetro, Belo Horizonte, BR DA - 2007-09-01 LA - en PB - Proc. VII Semetro, Belo Horizonte, BR PY - 2007 TI - JOSEPHSON VOLTAGE STANDARD INTERCOMPARISON UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32759 ER -