Pure and Utilitarian Prisoner's Dilemmas (with Serge Moresi), Economics and Philosophy 1 (1995), pp 333–343.
Numbers without Ones (with Andrew Vogt), The Fibonacci Quarterly, 30 (1992).
The Domino Relation, Journal of Philosophical Logic, 18 (1989), pp 173–195.
Stenius on Meaning, Theoria 50 (1984), pp 165–177.
An Axiomatization of Predicate Functor Logic, Notre Dame Journal of Formal Logic 24 (1983).
Logical Expressions, Constants and Operator Logic, Journal of Philosophy 78 (1981) pp 487–499.
Centered Logic: The Role of Entity-Centered Sentence Representation in Natural Language Inferencing" (with A.K. Joshi), Proceedings of 1979 International Joint Conference on Artificial Intelligence, Tokyo, Japan. Translated into Russian and reprinted in Soviet anthology, 1980.
Quantifiers as Modal Operators, Studia Logica 39 (1980) (Trends in Modal Logic) pp 145–158.
The Pragmatics of Tense, Synthese 40 (1979) pp 331–363.
Many-sorted Modal Logics (Vol I and II), Philosophical Studies #29, Uppsala, Sweden, 1977.