What even is gender? by Briggs, R. A. 1982-, George, B. R.

On difference in Aristotle's categories by Malabed, Rizalino Noble

Categories of being essays on metaphysics and logic

Available for University of the Philippines Baguio via Oxford Academic. Click here to access

Ontological reduction by Grossmann, Reinhardt 1931-

Categorial frameworks by Korner, Stephan 1913-