1. Austin, Shreve’s Chemical Process Industries, pp. 320–345.
2. Chemical Profiles in Chemical Marketing Reporter, 9-7-92 and 1-10-00.
3. Kent, Riegel’s Handbook of Industrial Chemistry, pp. 347–366, 458–479.
4. Lowenheim and Moran, Faith, Keyes, and Clark’s Industrial Chemicals, pp. 628–639, 786–795.
5. Thompson, Industrial Inorganic Chemicals: Production and Uses, pp. 93–121.