RAHEEM, A. A., F. A. ADEKOLA, and I. OBIOH. “SEASONAL VARIATION OF TOTAL OXIDANTS: CONTRIBUTIONS OF OXIDES OF NITROGEN, SULPHUR (IV) OXIDE EMISSIONS AND BACKGROUND OZONE FROM ILORIN, NIGERIA”. International Journal of Chemistry Research, vol. 3, no. 1, Jan. 2012, pp. 25-29, https://www.ijcr.info/index.php/journal/article/view/71.