TY  - RPRT
TI  - X-CAL - A calibration system for electrical measurement devices used with diagnostic x-ray units 
AU  - McKnight, Ronald H
AU  - Hebner, Robert E
PY  - 1980
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 80-2072
DO  - 10.6028/NBS.IR.80-2072
ER  -