D. . Fovwe Ogeleka, O. . Nmai, O. . Edjere, A. Nwudu, and F. . Ebodaghe Okieimen, “Quality characteristics of rainwater around an industrial area in Warri, Delta State, Nigeria”, Sci. J. Pure Appl. Sci., vol. 7, no. 3, pp. 762-773, Mar. 2018.