1. Carnap, R.: 1950, ‘Empiricism, Semantics, and Ontology’,Revue Internationale de Philosophie 4; revised and reprinted in Carnap: 1956,Meaning and Necessity, 2nd ed., pp. 205–221.
2. Clark, A.: 1989,Microcognition, MIT Press, Cambridge, Massachusetts.
3. Fodor, J.: 1987,Psychosemantics:The Problem of Meaning in the Philosophy of Mind, MIT Press, Cambridge, Massachusetts.
4. Haack, S.: 1976, ‘Some Preliminaries to Ontology’,Journal of Philosophical Logic 5, 457–474.
5. Hart, W. D.: 1990, ‘Review of M. Tye’,The Metaphysics of Mind, Philosophical Quarterly 40, 159, pp. 256–257.