1. Reynolds SM, Mackenzie AJ, Spina D, Page CP. The pharmacology of cough. Trends Pharmacol Sci 2004;25:569-576.
2. Banner AS. In: Leff AR, editor. Chapter 68. Pharmacologic treatment of cough. Pulmonary and Critical Care Pharmacology and Therapeutics 1996;International Edition. New York: McGraw-Hill. 673-679.
3. Dicpinigaitis PV. Potential new cough therapies. Pulm Pharmacol Ther 2004;17:459-462.
4. Fuloria M, Rubin BK. Evaluating the efficacy of mucoactive aerosol therapy. Respiratory Care 2000;45:868-873.
5. Poole PJ, Black PN. Oral mucolytic drugs for exacerbations of chronic obstructive pulmonary diseases: systematic review. BMJ 2001;322:1-6.
6. Lester LA. In: Leff AR, editor. Chapter 69. Mucolytic therapies. Pulmonary and Critical Care Pharmacology and Therapeutics 1996;International Edition. New York: McGraw-Hill. 681-694.