Kasim, Narimah Binti, et al. “Smart Emergency Detection Framework by IR4.0 for Safety Management Among G7 Contractors: A Pilot Study”. International Journal of Sustainable Construction Engineering and Technology, vol. 12, no. 5, Jan. 2022, pp. 322-33, https://penerbit.uthm.edu.my/ojs/index.php/IJSCET/article/view/10486.