TY - JOUR AU - Keller, Mark AU - Chen, A AU - Martinis, John AU - Zimmerman, Neil C2 - Science DA - 1999-09-01 00:09:00 LA - en M1 - 285 PB - Science PY - 1999 TI - A Capacitance Standard Based on Counting Electrons UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=16681 ER -