1. ISO 17556 (2019) Plastics - determination of the ultimate aerobic biodegradability in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved. International Organization for Standardization, Geneva
2. ASTM D 5988-12 (2018) Standard test method for determining aerobic biodegradation of plastic materials in soil. ASTM International, West Conshohocken
3. Plastics Europe, Plastics – the Facts 2017 (2017) An analysis of European plastics production, demand and waste data. Plastics Europe, Association of plastics manufacturers.
http://www.plasticseurope.org/
4. Hopewell J, Dvorak R, Kosior E (2009) Plastic recycling: challenges and opportunities. Philos Trans R Soc B364:2115–2126
5. UN Environment (2017) Clean seas, turn the tide on plastic. United Nations Environment Programme.
http://www.cleanseas.org/