Sources (1894 to 1901 of 1923)
| Title | Contributor(s) | Date (min–max) | Language | Diagrams | |
|---|---|---|---|---|---|
| De syllogismis categoricis | Floriacensis, Abbo | 975–1025 | Latin | 22 | |
| Abaelards Logik | Lenzen, Wolfgang | 2021 | German | 22 | |
| The Classical Aristotelian Hexagon Versus the Modern Duality Hexagon | Smessaert, Hans | 2012 | English | 23 | |
| No Group of Opposition for Constructive Logics: The Intuitionistic and Linear Cases | Mélès, Baptiste | 2012 | English | 23 | |
| From the Square to Octahedra | García-Cruz, José David | 2017 | English | 23 | |
| Why the Hexagon of Opposition is Really a Triangle: Logical Structures as Geometric Shapes | Milstein, Ori | 2024 | English | 23 | |
| On the 3D Visualisation of Logical Relations | Smessaert, Hans | 2009 | English | 24 | |
| Combinatorial Bitstring Semantics for Arbitrary Logical Fragments | Demey, Lorenz; Smessaert, Hans | 2018 | English | 24 |