TY  - RPRT
TI  - The error rates in multiple FSK systems and the signal-to-noise characteristics of FM and PCM-FS systems. 
AU  - Akima, H
PY  - 1963
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 167
DO  - 10.6028/NBS.TN.167
ER  -