C. N. Anyanwu, C. J. Animoke, B. U. Agu, I. F. Okafor, N. J. Ogbuagu, S. Bentson, and O. Ojike "Physical and Emission Properties of Blended Bio-Coal Briquettes Derived from Agro-Wastes in Nigeria", Advances in Science, Technology and Engineering Systems Journal, vol. 7, no. 3, pp. 116–122, 2022, doi: 10.25046/aj070313.