N. Freitag, J. Schneider, V. Decottignies, T. Fell, E. Kucukpinar, M. Schlummer (2024): "Waste Study on Flexible Food and Non-Food Packaging: Detailed Analysis of the Plastic Composition of European Polyethylene-Containing Waste Streams" Materials 2024, 17(13), 3202 https://www.mdpi.com/1996-1944/17/13/3202