1. Achinstein, P. (1974), ‘The Identity of Properties’, American Philosophical Quarterly
11, 257–76
2. Averill, E.W. (1990), ‘Are Physical Properties Dispositions?’, Philosophy of Science
57, 118–32
3. Bealer, G. (1987), ‘The Philosophical Limits of Scientific Essentialism’, in J. Tomberlin (ed.), Philosophical Perspectives 1, Atascadero: Ridgeway, 289–365
4. Berkeley, G. (1720), De Motu, Abridged and translated as ‘Concerning Motion’ in T.E. Jessop (ed.), Berkeley: Philosophical Writings, Nelson, 1952, 202–16
5. Bigelow, J.C., Ellis, B.D. and Lierse, C. (1992), ‘The World as One of a Kind: Natural Necessity and Laws of Nature’, British Journal for the Philosophy of Science
43, 371–88