TY - JOUR AU - Robert Schwall AU - David Zilz AU - Jeffrey Power AU - Charles Burroughs AU - Paul Dresselhaus AU - Samuel Benz C2 - IEEE Transactions on Applied Superconductivity DA - 2011-02-17 LA - en M1 - 21 PB - IEEE Transactions on Applied Superconductivity PY - 2011 TI - Practical Operation of Cryogen-free Programmable Josephson Voltage Standards UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906446 ER -