TY  - RPRT
TI  - Phase characteristics and time responses of unknown linear systems determined from measured CW amplitude data 
AU  - Ma, Mark T
PY  - 1991
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 1349
DO  - 10.6028/NIST.TN.1349
ER  -