Kayembe, K. O., W. B. Masengo, K. B. Kitwa, K. S. Muhune, K. M. Mutala, K. K. B. Muntele, I. B. Banza, K. D. Tshibanda, K. M. Mbayo, M. E. Kalonda, and S. J.-B. Lumbu. “Solvent Extraction of Germanium from Fe-Cu-Co-Ge Alloy: The Role of Isobutyl Methyl Ketone in a Ferric Iron-Containing Medium”. European Journal of Science, Innovation and Technology, Vol. 5, no. 5, Dec. 2025, pp. 122-30, https://ejsit-journal.com/index.php/ejsit/article/view/721.