3Peter F. Brussard, et al. , " Ecosystem management: what is it really?", Landscape and Urban Planning,40( 1998)9 - 20.
4Robert C. Szaro, William T. Sexton, et al, "the emergence of ecosystem management as a tool for meeting people's needs and sustaining ecosystems", Landscape and Urban Planning, 40(1998) 1 - 7.
5Robert T. Lackey, " Seven pillars of ecosystem management", Landscape and Urban Planning, 40(1998)21 - 30.
6Charles R. Malone, "State governments, ecosystem management, and the enlibra doctrine in the US", Ecological Economics 34(2000) 9 - 17.
7Antero Honkasalo, "The EMAS scheme: a management tool and instrument of environmental policy",Journal of Cleaner Production, 6(1998) 119 - 128.
8PMI, " A Guide to Project Management Body of Knowledge (2000)", USA.