METEB, Rana salim; AL HAFED, Ali abdulsatar. The role of outsourcing some activities in improving the quality of service provided to the customerExploratory research in Asiacell Communications. Tikrit Journal of Administrative and Economic Sciences, [S. l.], v. 18, n. 58, 2, p. 447–462, 2022. DOI: 10.25130/tjaes.18.58.2.25. Disponível em: https://www.tjaes.org/index.php/tjaes/article/view/423. Acesso em: 6 may. 2026.