Ngayakamo, B., A. M. Aboubakar, C. G. Komadja, A. Bello, and A. P. Onwualu. “Eco-Friendly Use of Eggshell Powder As a Bio-Filler and Flux Material to Enhance Technological Properties of Fired Clay Bricks”. Metallurgical and Materials Engineering, vol. 27, no. 3, June 2021, pp. 371-83, doi:10.30544/628.