1. Burke, M. B. (1980). Cohabitation, stuff and intermittent existence. Mind, 89, 391–405.
2. Dummett, M. A. E. (1981). Frege: Philosophy of language (2nd ed.). London: Duckworth.
3. Locke, J. (1975 [1690]). In: P. H. Nidditch (Ed.), Essay concerning human understanding. Oxford: Clarendon Press.
4. Lowe, E. J. (1983). On the identity of artifacts. The Journal of Philosophy, 80, 220–232.
5. Lowe, E. J. (1998). The possibility of metaphysics: Substance, identity, and time. Oxford: Clarendon.