Ruggero Pagnan
- Pagnan, Ruggero. 2013. “A Diagrammatic Calculus of Syllogisms.” In Visual Reasoning with Diagrams, edited by Amirouche Moktefi and Sun-Joo Shin, 33–53. Basel: Springer. (1 diagram)
- Pagnan, Ruggero. 2013. “Syllogisms in Rudimentary Linear Logic, Diagrammatically.” Journal of Logic, Language, and Information 22 (1): 71–113. (1 diagram)
- Pagnan, Ruggero. 2012. “A Diagrammatic Calculus of Syllogisms.” Journal of Logic, Language, and Information 21 (3): 347–364. (1 diagram)