T. Uttraporn, S. Sucharitaku, G. Theeraraj, C. Yuwaree, C. Navanugraha, and R. Hutacharoen, “Waste Water Minimization: Utilization of Rubber Latex Residue and Swine Dung as Fertilizer for Para Rubber Seedling Growth”, Environ. Nat. Resour. J., vol. 10, no. 1, pp. 53–67, Nov. 2016.