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Integrated value theory for natural areas
Lockwood, Michael, (1997)
On the relation between ecosystem services, intrinsic value, existence value and economic valuation
Davidson, Marc David, (2013)
Environmental philosophy and the concept of nonuse value
Mazzotta, Marisa J., (1995)
The ethics of environmental concern
Attfield, Robin, (1991)
Attfield, Robin, (1983)
Biocentric Consequentialism, Pluralism, and ‘The Minimax Implication’: A Reply to Alan Carter
Attfield, Robin, (2003)