Wojak, Anna. “Application of the A* Algorithm to Problems of the Euclidean Shortest Paths in the Plane With Polygonal Obstacles”. Annales Mathematicae Silesianae 22 (September 30, 2008): 69-82. Accessed May 18, 2024. https://journals.us.edu.pl/index.php/AMSIL/article/view/14053.