1. International Copper Study Group(ICSG): The World Copper Factbook 2022 (International Copper Study Group, 2022).
2. United States Geological Survey (USGS): Mineral Commodity Summaries (2023), https://www.usgs.gov/centers/national-minerals-information-center/mineral-commodity-summaries. Accessed 16 May 2023.
3. Winton Group: Copper-Bottomed Booms and Busts (2017), https://www.winton.com/longer-view/copper-bottomed-booms-and-busts. Accessed 17 May 2023.
4. H. Asahi, and N. Shiraishi: in COPPER2022, 2022.
5. Copper Development Association Inc.: Copper Drives Electric Vehicles (CDA, 2017).