1. Industrial Dust;Drinker,1954
2. American Society for Testing and Materials, Standard E-11–61, Philadelphia, Pa., 1961.
3. Testing Sieves and Their Uses, Handbook 53, W. S. Tyler Company, Cleveland, Ohio, 1969.
4. L. T. Work, Introduction, Symposium on Particle Size Measurement, p. 2, American Society for Testing and Materials, Philadelphia, Pa., 1959.
5. Powder Metallurgy;Schuhmann,1942