Muanmai Apinthanapong and Mongkol Phensaijai (2009) “Biosorption of Copper by Spent Yeast Immobilized in Sodium Alginate Beads”, Agriculture and Natural Resources. Bangkok, Thailand, 43(5), pp. 326–332. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/244836 (accessed: 14 September 2026).