Edelkamp, Stefan, Peter Kissmann, and Martha Rohte. “Symbolic and Explicit Search Hybrid through Perfect Hash Functions — A Case Study in Connect Four”. Proceedings of the International Conference on Automated Planning and Scheduling 24, no. 1 (May 10, 2014): 101-110. Accessed May 24, 2024. https://ojs.aaai.org/index.php/ICAPS/article/view/13637.