The Geometry of Standard Deontic Logic. - Alessio Moretti (Logica Universalis, 2009)

Why the Logical Hexagon? - Alessio Moretti (Logica Universalis, 2012)

B42: The Geometry of 4-Valued Contradiction. - Alessio Moretti (Diagrams, 2024)

Smurfing the Square of Opposition. - Jean-Yves Béziau; Alessio Moretti (Logica Universalis, 2024)