1. Brunner PH, Rechberger H (2016) Handbook of material flow analysis: for environmental, resource, and waste engineers, second edition, 2nd edn. CRC Press, Boca Raton
2. CACM (2019) Report on the development of the campus express service industry. China association for campus management. https://www.chinacacm.org/content/6165.html. Accessed 23 Dec 2019 (in Chinese)
3. Charles D, Kimman L (2023) Plastic waste makers index 2023. Minderoo Foundation. https://cdn.minderoo.org/content/uploads/2023/02/04205527/Plastic-Waste-Makers-Index-2023.pdf. Accessed 4 Feb 2023
4. CONAI (2017) Packaging recovery in Italy: the CONAI system. https://www.conai.org/
5. COREPLA (2021) Risultati. In: Corepla - Consorzio Nazionale per la Raccolta, il Riciclo e il Recupero degli imballaggi in Plastica. https://www.corepla.it/risultati-1. Accessed 9 Nov 2023