“Utilization of the Bacteria Bacillus Pumilus and Citrobacter Youngae As Flotation Bioreagents in the Microflotation of Chalcopyrite, Pyrite, and Silica”. Microbiology Indonesia 10, no. 1 (June 16, 2016): 3. Accessed April 26, 2024. https://jurnal.permi.or.id/index.php/mionline/article/view/375.