A. B. Clifford, O. E. C. Wokekoro, and E. Chike, “Spatial Analysis of Spill and Plant Biodiversity of Post-Impact Sites in Obio/Akpor LGA, Rivers State”, Amer.Jour.Bio.Nat.Scien., vol. 3, no. 3, pp. 162–166, Mar. 2026.