Omar Al-Sadhan, and Muhammad Awais Bhatti. “ARTIFICIAL INTELLIGENCE (AI) BASED CONTRACTS PROCUREMENT: EXAMINING THE INFLUENCE OF BIG DATA, MACHINE LEARNING, INTERNET OF THINGS, EMPLOYEE SKILLS & RESOURCES AND LEADERSHIP ON PROCUREMENT COST REDUCTION”. Operational Research in Engineering Sciences: Theory and Applications, vol. 6, no. 1, July 2023, http://oresta.org/menu-script/index.php/oresta/article/view/556.