A. MOHAMMED, Shamal; T. ISMAEL, Maher. 2020 Vol. 9 No. 2 (13). Academic Journal of Nawroz University (AJNU), [S. l.], v. 9, n. 2, 2020. Disponível em: https://journals.nawroz.edu.krd/files/article/view/926. Acesso em: 10 sep. 2026.