“Recycling of the Rare Earth Oxides from Spent Rechargeable Batteries Using Waste Metallurgical Slags”. Journal of Mining and Metallurgy, Section B: Metallurgy 49, no. 2 (July 1, 2013): 233. Accessed June 11, 2026. https://test.aseestant.ceon.rs/index.php/jmm/article/view/2371.