KEY INTERNAL FACTORS CAUSING SCHEDULE DELAYS IN YEMEN-MOBILE TELECOM TRANSCEIVER SITES PROJECTS: . مجلة جامعة صنعاء للعلوم التطبيقية والتكنولوجيا, [S. l.], v. 4, n. 1, p. 1481–1495, 2026. DOI: 10.59628/jast.v4i1.2292. Disponível em: https://journals.su.edu.ye/index.php/jast/article/view/2292. Acesso em: 19 أبريل. 2026.