“REDUCTIVE ROASTING OF IRON-RICH MANGANESE OXIDE ORE WITH ELEMENTAL SULFUR FOR SELECTIVE MANGANESE EXTRACTION”. Journal of Mining and Metallurgy, Section B: Metallurgy, vol. 53, no. 2, Jan. 2017, pp. 115-22, https://test.aseestant.ceon.rs/index.php/jmm/article/view/10343.