1. Clarke's Analysis of Drugs and Poisons;Moffat,2011
2. Goodman and Gilman's the Pharmacological Basis of Therapeutics;Brunton,2006
3. Spectrophotometric quantification of fenoterol hydrobromide in tablets and inhalation aerosol;Abounassif;Acta. Pharm. Jugosl.,1989
4. Spectrophotometric determination of etilefrine hydrochloride, prenalterol hydrochloride and ritodrine hydrochloride in pharmaceutical dosage form through nitrosation and subsequent copper chelation;Bakry;Anal. Lett.,1996
5. Spectrophotometric determination of terbutaline sulphate and tetracycline hydrochloride via ion pair complex formation Using Eosin Y;Dhamra;Pak. J. Anal. Environ. Chem.,2014