Ahmad, S. A., Yusoff, I., Shukor, M. Y. A., Phang, L. Y. and Syed, M. A. (2014) “Biodegradation of Chicken Feather Wastes in Submerged Fermentation Containing High Concentrations of Heavy Metals by Bacillus sp. khayat”, Journal of Environmental Bioremediation and Toxicology, 2(2), pp. 38–41. doi: 10.54987/jebat.v2i2.215.