1. Barker, J. E.; Freehold, N. J.Manufacture of Alkali Metal Phosphates. U.S. Patent 3,661,513, 1972.
2. Manor, S.; Pipko, G.; Langham, A.; Friedman, N.; Steiner, A.Process for the Manufacture of Monopotassium Phosphate. U.S. Patent 4,836,995, 1989.
3. Production of KH2PO4 from KCI and H3PO4 in an Organic Liquid Medium