S. Dey, S. Pal, D. Ghosh, C. Saha, A. Chakrabarti, and S. Datta, “Total polyphenol content, antioxidant activity and lipid peroxidation inhibition efficacy of branded tea (Camellia sinensis) available in India”, IJTS, vol. 8, no. 03, pp. 13-20, Oct. 2012.