Edem, I. E. and Adebimpe, O. A. . (2024) “A Taguchi fractional factorial design approach to assessing Cattle-Poultry-Hog manure mix ratio influences on biogas yield”, Engineering and Applied Science Research, 51(3), pp. 419–433. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/255284 (accessed: 2 April 2025).