TY  - RPRT
TI  - Calibrating a six-port reflectometer with four impedance standards 
AU  - Hoer, Cletus A
PY  - 1979
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 1012
DO  - 10.6028/NBS.TN.1012
ER  -