1. Japan Bioplastics Association (JBPA). GreenPla®. (http://www.jbpaweb.net/english/english.htm).
2. Biopolymers reuse, recycling, and disposal, chapter 10: economic evaluation and environmental impacts; section 10.3.2: source of feedstocks;Niaounakis,2013
3. Bioplastics in consumer electronics;Ravenstijn;Ind Biotechnol,2010
4. Public law 107–171—May 13. Farm Security and Rural Investment Act of 2002.
5. United Sates Department of Agriculture (USDA). Biopreferred Program. USDA Biopreferred brand guide addendum-definitions and frequently asked questions. http://www.biopreferred.gov/FILES/Defintions_and_FAQs.pdf.