Assessment of Background Gamma Radiation and Development of Radiation Contour Map for Kogi Central District, Kogi State, Nigeria. International Journal of Development Mathematics (IJDM), [S. l.], v. 2, n. 2, p. 158–173, 2025. DOI: 10.62054/ijdm/0202.08. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/193.. Acesso em: 17 apr. 2026.