On Systems Containing Aristotle's Thesis. - Richard Routley; Hugh Alexander Montgomery (J. Symb. Log., 1968)

The Inadequacy of Kripke's Semantical Analysis of D2 and D3. - Richard Routley; Hugh Alexander Montgomery (J. Symb. Log., 1968)

Algebraic semantics for S20 and necessitated extensions. - Hugh Alexander Montgomery; Richard Routley (Notre Dame J. Formal Log., 1976)

Models for Connexive Logics. - Hugh Alexander Montgomery; Richard Routley (FLAP, 2016)