1. Ambrus, Gergely. 2020. Carnap and Wittgenstein on Psychological Sentences: 1928–1932. Some Further Aspects of the Priority-Dispute Over Physicalism. In Franz Brentano and Austrian Philosophy, ed. D. Fisette, G. Fréchette, and F. Stadler. Cham: Springer.
2. Armstrong, David M. 1968. A Materialist Theory of Mind. London: Routledge.
3. ———. 1980. The Causal Theory of Mind. In The Nature of Mind and Other Essays, 16–31. Brisbane: University of Queensland Press.
4. Ayer, Alfred J. 1936/1946. Language, Truth, and Logic. 2nd ed. London: Gollancz.
5. ———. 1940. The Foundations of Empirical Knowledge. London: Macmillan.