Intisar saber Aljuboori, Shaymaa Mohammed Sameer Alrawi, Nada Abdul-razak Agha, and Alaa A.D. Taha, “Integration of Electronic Payment Systems and The Internet of Things to Reduce Operating Costs: An Applied Study”, Tikrit J. Admin. Econ. Sci., vol. 21, no. 72 part 2, pp. 139–160, Dec. 2025.