1. 3) M. Ohtaki, T. Saotome, K. Mori, H. Kudoh and T. Tanaka: “Development of Aluminum Recycling Technique by National Project”, Report of Furukawa Denko Inc. 104 (1999) 25-30.
2. Recycle Processes of Aluminum.
3. 5) K. Harada: “Recycling of Metallic materials”, http://www.nims.go.jp/ecomaterial/my-library/recycle/M-recycle/M-RCYCL.htm