Dissolution of rare earth elements from phosphate ore in hydrochloric acidHacialioglu-Erlenheim, Gizem; Tõnsuaadu, Kaia; Urtson, Kristjan; Kallaste, Toivo; Trikkel, AndresXIV International Mineral Processing and Recycling Conference : proceedings2021 / p. 166-171 : ill https://imprc.tfbor.bg.ac.rs/download/IMPRC_2021_Proceedings.pdf