1. E.F. Reynold (Ed.), Martindale, The Extra Pharmacopoeia, 30th ed., The Pharmaceutical Press, London, 1993.
2. The British Pharmacopoeia, vols. I and II, Her Majesty's, Stationary Office, London, 1990, p. 205.
3. The United States Pharmacopoeia XXIII and National Formulary XVIII, The US Pharmaceutical Convention, Rockville, MD, 1995.
4. Spectrophotometric Titration of Edetic Acid in Ophthalmic Solutions
5. Sensitive spectrophotometric method for the determination of ethylenediaminetetraacetic acid in foods