Faaeq, Munadil K., Nik Kamariah Nik Mat, Alaa Khaleel Faieq, Mohammad M. Rasheed, and Qusay H. Al- Faieq. 2018. “Towards of Smart Cities Based on the Sustainability of Digital Services”. International Journal of Engineering & Technology 7 (4.28): 436-42. https://doi.org/10.14419/ijet.v7i4.28.22627.