Lee, Kwang-Pyo, Hyun-Soo Lee, Moonseo Park, Hyunsoo Kim, and Sangwon Han. “A Real-Time Location-Based Construction Labor Safety Management System”. Journal of Civil Engineering and Management 20, no. 5 (July 4, 2014): 724-736. Accessed November 25, 2024. https://jcem.vgtu.lt/index.php/JCEM/article/view/3167.