Hewa Mahmood Hasan; Mohammed Abdulaziz Mohsen; Nakhshin Jamal Mohammed. The Possibility of Adopting a Centralized Electronic Invoice System and Its Impact in Determining the Tax Base: An Analytical Study of the Opinions of a Sample of Academics, Professionals and Employees of Income Tax Departments - Kurdistan Region of Iraq - Erbil City). Tikrit J. Admin. Econ. Sci. 2024, 20, 37-54.