1. Squier CA, Wertz PW. Structure and function of the oral mucosa and implications for drug delivery. In: Rathbone MJ, editor. Oral mucosal drug delivery. New York: Marcel Dekker; 1996. p. 1–2.
2. Gibaldi M. The number of drugs administered buccally is increasing. Clin Pharmacol 1985;3:49–56.
3. Harris D, Robinson JR. Drug delivery via the mucous membranes of the oral cavity. J Pharm Sci 1992;81:1–10.
4. Davis SS, Daly PB, Kennerley JW, Frier M, Hardy JG, Wilson CG. Design and evaluation of sustained release formulations for oral and buccal administration. In: Bussmann WD, Dries RR, Wagner W, editors. Controlled release nitroglycerin in buccal and oral form. Basle: Karger; 1982. p. 17–25.
5. Schor JM, Davis SS, Nigalaye A, Bolton S. Susadrin transmucosal tablets. Drug Dev Ind Pharm 1983;9:1359–77.