Salah Al-Din Sayed Majeed J, جمال, Amer Hussain R, رؤى. Building a Software System Using a Spiral Model to Evaluate the Overall Risk of Projects Using Fuzzy Number Theory. RJCSM [Internet]. 2025 Jun. 25 [cited 2025 Aug. 5];10(1):365-84. Available from: https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19515