Bitupon Borah, Reshma Ahmed, Dibyojyoti Baruah, Debojit Kumar Sarmah, Sawlang Borsingh Wann, and Brijmohan Singh Bhau, “In-vitro antioxidant activity of tender shoot of Calamus leptospadix Griff”., World J Pharm Sci, vol. 2, no. 12, pp. 1893–1900, Dec. 2014.