1. BOYDEN S. 1979 An integrative approach to the study of human settlements Man and the Biosphere Technical Notes 12. UNESCO, Paris
2. BRUGMANN , J. 1994 Sustainability Indicators: Do We Need Them Initiatives: The Organizational Newsletter of the International Council for Local Environmental Initiatives 1 12
3. BURCH , R.D. 1994 MunicipalReportingon SustainableDevelopment. AStatusReview National Round Table on the Environment and the Economy Working Paper Number 24, NRTEE, Ottawa