N. C. Ezenwegbu, A. I. Gbasouzor, A. A. Akaho, O. C. Okeke, and C. E. Langat "Economic Replacement of Plants and Equipment: A Decision-Making Framework in Engineering", Advances in Science, Technology and Engineering Systems Journal, vol. 10, no. 5, pp. 20–32, 2025, doi: 10.25046/aj100503.