TY  - RPRT
TI  - NO₂ Heterodyne frequency measurements with a tunable diode laser, a CO laser transfer oscillator, and CO₂ laser standards, 
AU  - Zink, L R
PY  - 1987
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 1308
DO  - 10.6028/NBS.TN.1308
ER  -