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2. Alleman J. E. et al. “Solidification Encapsulation and Stabilization of Industrial Wastes ” Proceedings of the 35th Purdue Industrial Waste Conference Ann Arbor Science Publication Ann Arbor Mich. Vol. 35 1982 p. 803.
3. Experiments on the oxidation of sewage without the aid of filters
4. Berman N. A. “Brick: An Innovative Sludge Solidification Process ” thesis presented to the University of Maryland at College Park Maryland in 1983 in partial fulfillment of the requirements for the degree of Master of Science.