Sasaki, Yasuo. “Preservation of Misperceptions – Stability Analysis of Hypergames”. Proceedings of the 52nd Annual Meeting of the ISSS - 2008, Madison, Wisconsin 3, no. 1 (July 4, 2008). Accessed September 25, 2021. https://journals.isss.org/index.php/proceedings52nd/article/view/1007.