Sieghard Beller (°1966, †2018)
- Beller, Sieghard. 2012. “Human Deontic Reasoning in the Deontic Square.” In The Square of Opposition. A General Framework for Cognition, edited by Jean-Yves Beziau and Gillman Payette, 471–484. Bern: Peter Lang. (0 diagrams)
- Beller, Sieghard. 2010. “Deontic Reasoning Reviewed: Psychological Questions, Empirical Findings, and Current Theories.” Cognitive Processing 11 (2): 123–132. (1 diagram)
- Beller, Sieghard. 2008. “Deontic Reasoning Squared.” In Proceedings of the 30th Annual Conference of the Cognitive Science Society, edited by Bradley C. Love, Ken McRae, and Vladimir M. Sloutsky, 2103–2108. Austin, TX: Cognitive Science Society. (1 diagram)
- Bender, Andrea, and Sieghard Beller. 2003. “Polynesian Tapu in the ‘Deontic Square’: A Cognitive Concept, Its Linguistic Expression and Cultural Context.” Proceedings of the Annual Meeting of the Cognitive Science Society 25: 133–138. (1 diagram)