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hal-00657013v1  Conference papers
Mohamed NasraouiEssaid Bilal. Rare-earth elements characterization in natural apatite: microprobe analyses and coupled SEM/CL spectroscopy
SYMPHOS (1er Symposium International sur la Technologie et l'Innovation dans l'Industrie des Phosphates),, May 2011, Marrakech, Morocco
hal-00788958v1  Journal articles
Fernando PereiraEssaid Bilal. Phosphoric acid extraction and rare earth recovery from apatites of the Brazilian phosphatic ores
Romanian Journal of Mineral Deposits, Bucharest: Geological Institute of Romania, 2012, 85 (2), pp.49-52