1. Train, D. (1976), Chemy Ind, 15, 621-4.
2. BS 3405 (1961): Simplified Methods for Measurement of Grit and Dust Emission from Chimneys
3. BS 893 (1940): Methods of Testing Dust-Extraction Plant and the Emission of Solids from Chimneys
4. Stairmand, C.J. (1951), Sampling of dust-laden gases.Trans. Inst. Chem.Engrs, 29,31
5. 3. Sansone, E.B. (1969), Am. Ind. Hyg. Assoc. J,Sept.-Oct., 487-93