1. PlasticsEurope.Plastics—The Facts 2017: An Analysis of European Plastics Production Demand and Waste Data.
2. European Commission. A European Strategy for Plastics in a Circular Economy: Brochure. Available at:http://ec.europa.eu/environment/circular-economy/pdf/plastics-strategy-brochure.pdf.
3. Ellen MacArthur Foundation. The New Plastics Economy: Rethinking the Future of Plastics & Catalysing Action. Available at:https://www.ellenmacarthurfoundation.org/publications/the-new-plastics-economy-rethinking-the-future-of-plastics-catalysing-action.
4. Analyzing and Troubleshooting Single-Screw Extruders