O. Oghoghorie and I. I. Ogiku, “THE OPTIMIZATION OF ALUMINUM-BASED COMPOSITE OF COCONUT SHELL CHARCOAL AND COW BONE ASH USING D-OPTIMAL MIXTURE DESIGN”, FJS, vol. 9, no. 12, pp. 159–171, Dec. 2025, doi: 10.33003/fjs-2025-0912-4248.