1. Ekins P, Hughes N, Brigenzu S, Arden Clark C, Fischer-Kowalski M, Graedel T, et al. Resource efficiency: Potential and economic implications. A report of the International Resource Panel, United Nations Environment Programme, Paris, France; 2017. Available from: https://www.resourcepanel.org/sites/default/files/documents/document/media/resource_efficiency_report_march_2017_web_res.pdf.
2. Although there is no physical short-term scarcity of phosphorus, its resource efficiency should be improved;Scholz;J Ind Ecol,2019
3. Position paper on circular economy;ACEA,2015
4. Emergy-based evaluation and improvement for sustainable manufacturing systems considering resource efficiency and environment performance;Liu;Energy Convers Manage,2018
5. UN, Transforming our world: The 2030 agenda for sustainable. Resolution adopted by the General Assembly on 25 September 2015; 2015. Available from: http://www.un.org/ga/search/view_doc.asp?symbol=A/RES/70/1&Lang=E.