Siow, Pui Zhen, and Siaw Chong Lee. “Solving the N-Puzzle With Iterative Deepening A* (IDA*) Algorithm”. Enhanced Knowledge in Sciences and Technology 3, no. 1 (August 7, 2023): 097–107. Accessed May 20, 2024. https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/10818.