U. A. Umar, A. M. Gumel, Y. Y. Deeni, A. A. Ibrahim, U. U. Alhaji, and U. U. Lawan, “Bioremediation of Cadmium, Lead, Zinc and Copper Contaminated Soils obtained from Dutse and Hadejia Regions by Lysinibacillus sphaericus Strain FUD-001 and Stenotrophomonas maltophilia Strain FUD-002 Immobilized on a Biochar”, USci, vol. 4, no. 1, pp. 19–27, Feb. 2025.