Khaled, Bilal, and Lamia Nasser. “Impact of Robotic Cleaning Technologies on Labor Dynamics and Productivity in the Facility Management Sector”. AI, IoT and the Fourth Industrial Revolution Review, vol. 13, no. 11, Nov. 2023, pp. 9-17, https://scicadence.com/index.php/AI-IoT-REVIEW/article/view/39.