1. British Standard 1339 Definitions, formulae and constants relating to the humidity of the air;BS 1339:1965,1981
2. An experimental study of the wet bulb hygrometer;Sherwood;Trans Am Inst Chem Eng,1932
3. Calculations for dryer design;Grosvenor;Trans Am Inst Chem Eng,1908
4. Humidity and moisture. Measurements and control in science and industry;Wexler,1965
5. Measurement of humidity;Hickman,1970