1. Absorption of drugs through the oral mucosa;Gibaldi;J. Oral Ther. Pharmacol.,1965
2. Permeability of the oral mucosa;Siegel,1984
3. The permeability of oral mucosa;Squier;Crit. Rev. Oral Biol. Med.,1991
4. Absorption of drugs from the human oral cavity;Rathbone;Int. J. Pharm.,1991
5. Developments in buccal drug delivery;De Vries;Crit. Rev. Ther. Drug Carrier Syst.,1991