1. BCI report: National Recycling Rate Study;SmithBucklin Statistics Group,2019
2. ILA (n.d.) ILA Data: https://ila-lead.org/.
3. CRU (n.d.) CRU Data: LME Price: www.CRU.com.
4. Simsmetal (2022) Simsmetal History: https://www.simsmm.com.au/blog/2022/the-history-of-metal-recycling/.
5. COBAT (n.d.) Italian Legislative Decree 188/08 and Former Art. 235 of Legislative Decree No. 152/06. https://www.cobat.it/.