Lei Li, G. Wu, and F. Tian. “The Immobilization of Fluorides from Spent Carbon Cathode in a Copper Smelting Slag”. Journal of Mining and Metallurgy, Section B: Metallurgy, Vol. 58, no. 1, Jan. 2022, pp. 129-3, https://aseestant.ceon.rs/index.php/jmm/article/view/32773.