1. American Society for Testing Materials, Special Technical Publication No. 148-A, “Manual on Industrial Water,” 2nd printing, Philadelphia, 1954.
2. Boer-Nieveld, Y., and Pauli, D., Survey of Water Desalting Investigations, General Technical Department, T.N.O., 5 Koningskade, The Hague, 1952 (in English).
3. Bodamer, G. W., U. S. Patent 2,681,319 (June 15, 1954).