Seo, Sang Yun, Wan Seop Choi, Myong Jun Kim, and Tam Tran. 2013. “LEACHING OF A Cu-Co ORE FROM CONGO USING SULPHURIC ACID-HYDROGEN PEROXIDE LEACHANTS”. Journal of Mining and Metallurgy, Section B: Metallurgy 49 (1), 1. https://aseestant.ceon.rs/index.php/jmm/article/view/1337.