Kochar, Qaidar. “The Increasing the Efficiency of Material Recovery Facility through Source Separation of Residential Solid Waste, the Case of Duhok City”. Technium: Romanian Journal of Applied Sciences and Technology, vol. 3, no. 3, Apr. 2021, pp. 13-22, https://techniumscience.com/index.php/technium/article/view/3156.