Lewis, H.D. and A. Goldman. "Theorems for calculation of weight ratios to produce maximum packing density of powder mixtures." Journal of the American Ceramic Society 49/6(June 1966): 323–327.

Lewis, H.D. and A. Goldman. "Theorems for calculation of weight ratios to produce maximum packing density of powder mixtures." Journal of the American Ceramic Society 49/6(June 1966): 323–327.