The Homogeneous Form of Logic Programs with Equality. - William Demopoulos (Notre Dame J. Formal Log., 1990)

Frege and the rigorization of analysis. - William Demopoulos (J. Philos. Log., 1994)

Elementary Propositions and Independence. - John L. Bell; William Demopoulos (Notre Dame J. Formal Log., 1996)

In Memoriam: Robert E. Butts 1928-1997. - William Demopoulos (Synth., 1997)

On the Origin and Status of our Conception of Number. - William Demopoulos (Notre Dame J. Formal Log., 2000)

The Logicism of Frege, Dedekind, and Russell. - William Demopoulos; Peter Clark (The Oxford Handbook of Philosophy of Mathematics and Logic, 2007)

Some remarks on the bearing of model theory on the theory of theories. - William Demopoulos (Synth., 2008)