1. Business Roundtable Redefines the Purpose of a Corporation to Promote ‘An Economy That Serves All Americans’https://www.businessroundtable.org/business-roundtable-redefines-the-purpose-of-a-corporation-to-promote-an-economy-that-serves-all-americans
2. Factores Determinantes del Desarrollo Económico Y Social;Amate Fortes,2011
3. The Potential for Substituting Manpower for Energy;Stahel,1976
4. The circular economy
5. The Performance Economy;Stahel,2010