Sommers on empty domains and existence. - George Englebretsen (Notre Dame J. Formal Log., 1972)

A note on contrariety. - George Englebretsen (Notre Dame J. Formal Log., 1974)

Sommers' proof that something exists. - George Englebretsen (Notre Dame J. Formal Log., 1975)

Rescher on 'e!'. - George Englebretsen (Notre Dame J. Formal Log., 1975)

The square of opposition. - George Englebretsen (Notre Dame J. Formal Log., 1976)

Aristotle on the subject of predication. - George Englebretsen (Notre Dame J. Formal Log., 1978)

On propositional form. - George Englebretsen (Notre Dame J. Formal Log., 1980)

Noncategorical syllogisms in the Analytics. - George Englebretsen (Notre Dame J. Formal Log., 1980)

Do we need relative identity? - George Englebretsen (Notre Dame J. Formal Log., 1982)

Opposition. - George Englebretsen (Notre Dame J. Formal Log., 1984)

Czeżowski on wild quantity. - George Englebretsen (Notre Dame J. Formal Log., 1986)

Singular/general. - George Englebretsen (Notre Dame J. Formal Log., 1986)

Preliminary notes on a new modal syllogistic. - George Englebretsen (Notre Dame J. Formal Log., 1988)

Formatives. - George Englebretsen (Notre Dame J. Formal Log., 1989)

Linear Diagrams for Syllogisms (with Relatitonals). - George Englebretsen (Notre Dame J. Formal Log., 1992)

The Forms of Categorical Proposition. - Fabien Schang; George Englebretsen; José Martín Castro-Manzano (NCL, 2022)