1. RIVM Report;M. Asselt van,1995
2. A. Atkinsson et al., “Sustainable Seattle” indicators (1995).
3. A. Baranzini and M. O'Connor,Green National Product: The Neoclassical Capital Theory and Its Application (forthcoming).
4. D. Birnbacher,Verantwortung für zukünftige Generationen, Enke, Stuttgart, 1988.
5. F.H. Borman and S.R. Kellert (eds.),Ecology, Economy, Ethics: The Broken Circle, Yale University Press, New Haven CT, 1991.