1. Handbook of Meteorological Instruments,2nd ed. (Her Majesty’s Stationery Office, 1981), Vol. 3.
2. J. C. Kaimal and J. J. Finnigan,Atmospheric Boundary Layer Flows: Their Structure and Measurement(Oxford University Press, New York, 1994).
3. The Variable-Path Lyman-Alpha Hygrometer and Its Operating Characteristics
4. Effects of Humidity on the Velocity of Sound in Air