1. Forti, V., Baldé, C.P., Kuehr, R. & Bel, G. The Global E-waste Monitor 2020: Quantities, Flows and the Circular Economy Potential (United Nations University (UNU)/United Nations Institute for Training and Research (UNITAR)-co-hosted SCYCLE Programme, International Telecommunication Union & International Solid Waste Association, 2020).
2. Kaya, M. Electronic waste and printed circuit board recycling technologies. In The Minerals, Metals & Materials Series (Springer, 2019).
3. Stevens, G. C. & Goosey, M. Materials used in manufacturing electrical and electronic products. In Electronic Waste Management (eds Hester, E. & Harrison, R. M.) 33–35 (Royal Society of Chemistry, 2009).
4. Anastas, P. T. & Warner, J. C. Green Chemistry: Theory and Practice (Oxford University Press, 1998).
5. Rajagopal, R., Aravinda, L., Rajara, P., Bhat, B. & Sahajwalla, B. Activated carbon derived from non-metallic printed circuit board waste for supercapacitor application. Electrochim. Acta 211, 488–498 (2016).