Pauer, Erik, Victoria Heinrich, and Manfred Tacker. “Methods for the Assessment of Environmental Sustainability of Packaging: A Review”. IJRDO-Journal of Agriculture and Research (ISSN: 2455-7668) 3, no. 6 (May 31, 2017): 33-62. Accessed May 4, 2024. https://ijrdo.org/index.php/ar/article/view/86.