John Macnamara
(1995). A category-theoretic approach to Aristotle's term logic, with special reference to syllogisms. In M. Marion & R. S. Cohen (eds.) Québec studies in the philosophy of science, part I (pp. 57-68). Dordrecht: Springer.
(1986). But what is belief itself?. In L. Mos (ed.) Annals of theoretical psychology (pp. 357-364). Dordrecht: Springer.