1. Ash, M., Ash, I., 2002. Pharmaceutical Additives, Electronic Handbook, 2nd ed. Synapse Information Resources, Inc., New York.
2. A cross-over trial comparing once daily levobunolol with once and twice daily timolol;Akafo;Eur. J. Ophthalmol.,1995
3. Influence of corneal epithelial integrity on the penetration of timolol prodrugs;Chien;J. Ocul. Pharmacol.,1988
4. DeSantis Jr., L.M., Patil, P.N., 1994. Pharmacokinetics. In: Mauger, T.F., Craig, E.L. (Eds.), Havener’s Ocular Pharmacology, 6th ed. Mosby-Year Book, Mosby, MO, pp. 22–52.
5. In vitro and in vivo evaluation of Pluronic F127-based ocular delivery system for timolol maleate;El-Kamel;Int. J. Pharm.,2002