I. P. Obani, Z. I. Obani, P. F. C. Anaeto, T. O. Akroh, and C. S. Nwachukwu, “Evaluating the Success of Circular Economy Models in Reducing Waste: Evidence from Europe and China”, Amer.Jour.Bio.Nat.Scien., vol. 2, no. 3, pp. 72–96, Mar. 2025.