Uduma, . E. A., S. I. Iwueze, O. C. Arimie, and O. E. . Biu. “MODELLING THE NIGERIAN PORTS AUTHORITY REVENUE GENERATED SERIES WITH AND WITHOUT OUTLIERS”. Academic Journal of Statistic and Mathematics, vol. 7, no. 7, Aug. 2021, http://cirdjournals.com/index.php/ajsm/article/view/24.