TY  - RPRT
TI  - Measurement of rf power and attenuation using superconducting quantum interference devices 
AU  - Kamper, R A
PY  - 1973
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 643
DO  - 10.6028/NBS.TN.643
ER  -