• Obtaining Rare Earth Element Concentrates from Estonian Phosphate Rock via Hydrochloric Acid ProcessingAzeez, Ruhany Sheherazad; Tõnsuaadu, Kaia; Einard, Marve; Kaljuvee, Tiit; Trikkel, AndresCritical Minerals Conference 2025 : Conference Proceedings2025 / p. 5