| | The Power of the Hexagon, p. 36, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3–4 | Hexagon |
| | The Power of the Hexagon, p. 36, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The Power of the Hexagon, p. 37, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The Power of the Hexagon, p. 38, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The Power of the Hexagon, p. 38, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The Power of the Hexagon, p. 39, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The Power of the Hexagon, p. 39, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | Deon+: Abduction and Constraints for Normative Reasoning, p. 311, by Alberti, Marco; Gavanelli, Marco; Lamma, Evelina | 2012 | Classical Sigma-2 | 3 | Rectangle |
| | Deon+: Abduction and Constraints for Normative Reasoning, p. 312, by Alberti, Marco; Gavanelli, Marco; Lamma, Evelina | 2012 | A Single PCD | 2 | Rectangle |
| | A Diagrammatic Calculus of Syllogisms, p. 360, by Pagnan, Ruggero | 2012 | Classical Sigma-2 | 3 | Rectangle |
| | The New Rising of the Square of Opposition, p. 7, by Beziau, Jean-Yves | 2012 | Classical Sigma-2 | 3 | Rectangle |
| | The New Rising of the Square of Opposition, p. 9, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The New Rising of the Square of Opposition, p. 9, by Beziau, Jean-Yves | 2012 | Classical Sigma-2 | 3 | Rectangle |
| | The New Rising of the Square of Opposition, p. 9, by Beziau, Jean-Yves | 2012 | Contrariety 3-clique | 3 | Triangle |
| | The New Rising of the Square of Opposition, p. 9, by Beziau, Jean-Yves | 2012 | Subcontrariety 3-clique | 3 | Triangle |
| | The New Rising of the Square of Opposition, p. 12, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3–4 | Hexagon |
| | The New Rising of the Square of Opposition, p. 12, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3–4 | Hexagon |
| | The New Rising of the Square of Opposition, p. 12, by Beziau, Jean-Yves | 2012 | Béziau Sigma-4 | 4 | Octagon |
| | The New Rising of the Square of Opposition, p. 12, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The New Rising of the Square of Opposition, p. 12, by Beziau, Jean-Yves | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
| | The New Rising of the Square of Opposition, p. 13, by Beziau, Jean-Yves | 2012 | Sigma-6 Graph | 4 | Two Dimensional Shape |
| | The New Rising of the Square of Opposition, p. 14, by Beziau, Jean-Yves | 2012 | Moretti-Pellissier Sigma-4 | 4–5 | Octagon |
| | The New Rising of the Square of Opposition, p. 15, by Beziau, Jean-Yves | 2012 | Contrariety 4-clique | 4 | Rectangle |
| | The New Rising of the Square of Opposition, p. 16, by Beziau, Jean-Yves | 2012 | Classical Sigma-2 | 3 | Rectangle |
| | Logical Oppositions in Arabic Logic: Avicenna and Averroes, p. 25, by Chatti, Saloua | 2012 | Classical Sigma-2 | 3 | Rectangle |