et.al, Kyeong-Tae Jeong. “Study on Automatic Arrangement Algorithm for Tower Cranes With Applying Lifting Limit Axis”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 6, Apr. 2021, pp. 418-26, https://www.turcomat.org/index.php/turkbilmat/article/view/1855.