C. P. Ononugbo, and S. Oduware. “Baseline Studies of Terrestrial Outdoor Gamma Dose Rates of Ten Selected Markets in Port Harcourt Metropolis”. Archives of Current Research International 10, no. 2 (October 17, 2017): 1–19. Accessed October 16, 2025. https://www.journalacri.com/index.php/ACRI/article/view/163.