Al Hilal, Mohamed. “Radon As a Natural Radiotracer to Investigate Infiltration from Surface Water to Nearby Aquifers: A Case Study from the Barada Riverbank, Syria”. Geofisica Internacional 59, no. 3 (July 1, 2020): 208–223. Accessed May 18, 2024. http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/132.