1. Goodman, L. S. and Gilman, A. 1985.The pharmacological basis of therapeutics, 1150–1166. New York: Macmillan.
2. Wade, A. 1978.Martindale's extra pharmacopeia, 27th, ed., 1135–6. 1155–1160. London: Pharmaceutical Press.
3. Polymer-Drug Interaction: Stability of Aqueous Gels Containing Neomycin Sulfate
4. Florey, K. 1979.Analytical profiles of drug substances, Vol. v. 8, 399–488. New York: Academic Press.