1. Report on Reports: Our Common Future: The World Commission on Environment and Development;Burton Ian;Environment: Science and Policy for Sustainable Development,1987
2. Impact of Technology on Product Life Cycle Design: Functional and Environmental Perspective;Kim,2012
3. The impact of biofuels on commodity food prices: Assessment of findings;Zilberman David;American Journal of Agricultural Economics,2012
4. ht tp://www2.warwick.ac.uk/newsandevents/pressreleases/ne1000000097300/. Accessed 12.14.2014.
5. http://www.ecomall.com/greenshopping/motorolax.htm. Accessed 12.14.2014.