Al-Hilal, Mohamed. «Establishing the Range of Background for Radon Variations in Groundwater Along the Serghaya Fa». Geofísica Internacional 55, no. 4 (octubre 1, 2016): 255–266. Accedido abril 6, 2025. http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/145.