O.O., Oyegbanren; O.O. KWONNA, Obumneme; A. AKUMA, Oji. The Environmental and Socio-Economic Imperative for Waste Lubricating Oil Re-Refining in Developing Economies: A Case Study of Nigeria. Engineering And Technology Journal, [S. l.], v. 10, n. 9, p. 7200–7206, 2025. DOI: 10.47191/etj/v10i09.34. Disponível em: https://everant.org/index.php/etj/article/view/2232. Acesso em: 28 sep. 2026.