Shimei. I, Ferdinand, Chineke T. C., Nwofor O. K, Okoro U.K, and Ewurum B. B. 2016. “Multiyear Satellite Total Ozone Column Dimension Within West Africa”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 28 (2):34-53. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/5893.