M. Z. A. Tsambe, C. F. de Almeida, C. M. L. Ugaya, and L. F. de A. Cybis, “Environmental Assessment of Used Lubricant Oil in Southern Brazilian Region”, JEAM, vol. 7, no. 4, pp. 381–394, Aug. 2026, doi: 10.5890/JEAM.2019.12.003.