1. Production, Consumption and Externalities;Ayres;Am. Econ. Rev.,1969
2. Economic growth, carrying capacity, and the environment;Arrow;Science,1995
3. Securing natural capital and expanding equity to rescale civilization;Ehrlich;Nature,2012
4. Resource Efficiency in Europe: Policies and Approaches in 31 EEA Member and Cooperating Countries,2011
5. http://www.eco-innovation.eu/index.php?option=com_content&view=article&id=14&Itemid=36