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Webley, Paul and Nyhus, Ellen (2007) 'Inter-temporal choice and self-control; saving and borrowing.' In: Lewis, Alan, (ed.), Cambridge Handbook of Psychology and Economic Behaviour. Cambridge: Cambridge University Press, pp. 105-131.
Webley, Paul, Lewis, Alan and Mackenzie, Craig (2001) 'Commitment among Ethical Investors: An Experimental Approach.' Journal of Economic Psychology, 22 (1). pp. 27-42.