Alridha, Ahmed Hasan, and Ahmed Sabah Al-Jilawi. “Solving NP-Hard Problem Using a New Relaxation of Approximate Methods”. International journal of health sciences 6, no. S3 (April 1, 2022): 523–536. Accessed May 24, 2026. https://sciencescholar.us/journal/index.php/ijhs/article/view/5375.