4Oliver Fromm,1999,ecological Structure and Functions of Biodiversity as Elements of Its Total Economic Value,Environmental and [Resource Economics 16:303-328,2000.
7Karen Williamson,CPSI,Growing with Green Infrastructure,Heritage Conservancy,2003,from http://www.heritageconservancy,org./[growing with green infrastructure.pdf.
8Andreas Seiler,,Inga-Maj Eriksson,Habitat Fragmentation & Infrastructure and the Role of Ecological Engineering,,Maastricht & DenHague,1995:253-264.
