ABBAS KHODIER ABBAS; NAGHAM YUSIF ABD ALREDA. Measuring the size of the gap in implementing the requirements of the environmental management system in accordance with the standard (ISO 14001: 2015): A case study in the Central Refineries Company/Al Dora. Tikrit Journal of Administrative and Economic Sciences, [S. l.], v. 20, n. 68, part 1, p. 91–102, 2024. DOI: 10.25130/tjaes.20.68.1.5. Disponível em: https://www.tjaes.org/ojs/index.php/tjaes/article/view/2000. Acesso em: 5 mar. 2026.