Achten, H., and J. Jessurun. “A Multi-Agent Mah Jong Playing System: Towards Real-Time Recognition of Graphic Units in Graphic Representations”. Acta Polytechnica 43, no. 2 (January 2, 2003). Accessed April 28, 2024. https://ojs.cvut.cz/ojs/index.php/ap/article/view/416.