Oh, Jai-woo, and Jin-Kyu Kang. “A Study of RTLS-Based Construction Worker Safety Management System Model”. International Journal of Engineering & Technology 7, no. 3.24 (August 10, 2018): 365–369. Accessed July 18, 2024. https://sciencepubco.com/index.php/ijet/article/view/22687.