Nualchavee Roongtanakiat, Pimsiri Sudsawad, and Narippawat Ngernvijit. 2010. “Uranium Absorption Ability of Sunflower, Vetiver and Purple Guinea Grass”. Agriculture and Natural Resources 44 (2). Bangkok, Thailand:182-90. https://li01.tci-thaijo.org/index.php/anres/article/view/244904.