3Brian Roach,William W. Wade.Policy evaluation of natural resource injuries using habitat equivalency analysis[J]. Ecological Economics . 2005 (2)
4James L Paddock,Daniel R Siegel,James L Smith.Option valuation of claims on real assets: The case of offshore petroleum leases. Quarterly Journal . 1988
5Cawood, F.T.,Minnitt, R.C.A.Identification and distribution of mineral rents in southern Africa. Journal of The South African Institute of Mining and Metallurgy . 2002