6Bauer R A. Social Indicator[ M]. Cambridge, MA: MIT Press, 1966.
7Redclift M. Sustainable Development: Exploring the Contradictions [ M ]. London: Methuen, 1987.
8Kulik O, Harmen V. In Search of Indicators of Sustainable Development. Hingam [ M ]. MA: Klueer Academic Publishers,1991.
9Gustavson K R Lonergan S C, Ruitenbeek H J. Selection and modeling of sustainable development indicators : a ease study of the Fraser River Basin, British Columbia [ J ]. Ecological Economics, 1999, 28 ( 1 ) : 117 - 132.
