|  | The metalogical hexagon of opposition, p. 115, by Beziau, Jean-Yves | 2013 | Contrariety 3-clique | 3 | Triangle |
|  | The metalogical hexagon of opposition, p. 116, by Beziau, Jean-Yves | 2013 | Classical Sigma-2 | 3 | Rectangle |
|  | The metalogical hexagon of opposition, p. 116, by Beziau, Jean-Yves | 2013 | Classical Sigma-2 | 3 | Rectangle |
|  | The metalogical hexagon of opposition, p. 117, by Beziau, Jean-Yves | 2013 | Classical Sigma-2 | 3 | Rectangle |
|  | The metalogical hexagon of opposition, p. 117, by Beziau, Jean-Yves | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | The metalogical hexagon of opposition, p. 117, by Beziau, Jean-Yves | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | The metalogical hexagon of opposition, p. 118, by Beziau, Jean-Yves | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | The metalogical hexagon of opposition, p. 118, by Beziau, Jean-Yves | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | The metalogical hexagon of opposition, p. 119, by Beziau, Jean-Yves | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | The metalogical hexagon of opposition, p. 119, by Beziau, Jean-Yves | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | The metalogical hexagon of opposition, p. 121, by Beziau, Jean-Yves | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Constraints on the lexicalization of logical operators, p. 4, by Katzir, Roni; Singh, Raj | 2013 | Classical Sigma-2 | 3 | Rectangle |
|  | Graph Drawing in Education, p. 738, by Bridgeman, Stina | 2013 | Classical Sigma-2 | 3 | Square |
|  | Syllogisms in Rudimentary Linear Logic, Diagrammatically, p. 86, by Pagnan, Ruggero | 2013 | Classical Sigma-2 | 3 | Rectangle |
|  | A Diagrammatic Calculus of Syllogisms, p. 43, by Pagnan, Ruggero | 2013 | Classical Sigma-2 | 3 | Rectangle |
|  | Preface, p. viii, by Moktefi, Amirouche; Shin, Sun-Joo | 2013 | Classical Sigma-2 | 3 | Square |
|  | A Defeasible Logic of Intention, p. 327, by Castro-Manzano, José Martín | 2013 | Classical Sigma-2 | 3 | Square |
|  | A Formal Concept View of Abstract Argumentation, p. 9, by Amgoud, Leila; Prade, Henri | 2013 | Keynes-Johnson Sigma-4 | 7 | Cube |
|  | Picking the one that does not fit - A matter of logical proportions, p. 395, by Prade, Henri; Richard, Gilles | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Picking the one that does not fit - A matter of logical proportions, p. 395, by Prade, Henri; Richard, Gilles | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | From Analogical Proportion to Logical Proportions, p. 476, by Prade, Henri; Richard, Gilles | 2013 | Contrariety 4-clique | 4 | Rectangle |
|  | From Analogical Proportion to Logical Proportions, p. 476, by Prade, Henri; Richard, Gilles | 2013 | Non-Sigma | | Rectangle |
|  | From Analogical Proportion to Logical Proportions, p. 477, by Prade, Henri; Richard, Gilles | 2013 | Classical Sigma-2 | 3 | Rectangle |
|  | From Analogical Proportion to Logical Proportions, p. 478, by Prade, Henri; Richard, Gilles | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | From Analogical Proportion to Logical Proportions, p. 479, by Prade, Henri; Richard, Gilles | 2013 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |