S. Rajagopal, B. Raman, I. Bhaskar Reddy, M. Rama Rao, and K. Sivakumar, “Antioxidants and Free Radical Scavenging Activity of Brown Algae of Visakhapatnam Coast”, ajc, vol. 20, no. 7, pp. 5347–5352, Mar. 2010.