Key, D.H. ‘Transpersonal Patterns in the Natural Change Project.’ Self & Society: An International Journal for Humanistic Psychology, 2015, Summer 43 (2).
Kerr, M. & Key, D. (2012) ‘The Ecology of the Unconscious’, in Vital Signs, Karnac: London.
Key, D.H. & Kerr, M.H. (2012) ‘The Natural Change Project’, in Vital Signs, Karnac: London.
Kerr, M.H. & Key, D.H. (2011) ‘The Ouroborus (Part 1): Towards an ontology of connectedness in ecopsychology research.’ European Journal of Ecopsychology. Vol 2, 48-60. (Download PDF)
Key, D.H. & Kerr, M.H. (2011) ‘The Ouroborus (Part 2): Towards an Intersubjective-Heuristic Method for Ecopsychology Research.’ European Journal of Ecopsychology. Vol 2, 61-75. (Download PDF)
Key, D. (2003) ‘The Ecology of Adventure’. Unpublished MSc Thesis. Centre for Human Ecology: Edinburgh (Download PDF)