Team, S. “Unshackle Game on 2D Grid and Shadow Strategy: Thitiphut Leelathanakit, Ratinan Boonklurb, Sirirat Singhun”. Thai Journal of Mathematics, Jan. 2022, pp. 89-102, https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1276.