Spash, Clive L. and Ryan, Anthony M. (2010): Ecological, Heterodox and Neoclassical Economics: Investigating the Differences. Unpublished.
Ryan, Anthony M. and Spash, Clive L. (2010): Measuring Beliefs Supportive of Environmental Action and Inaction: A Reinterpretation of the Awareness of Consequences Scale. Unpublished.
Ryan, Anthony M. and Spash, Clive L. (2010): Testing Kahneman's Attitudinal WTP Hypothesis. Unpublished.
