Dare, O. P., and E. S. Okiemute. “Impact of Different Centroid Means on the Accuracy of Orthometric Height Modelling by Geometric Geoid Method”. International Journal of Scientific Reports, vol. 6, no. 4, Mar. 2020, pp. 124-30, doi:10.18203/issn.2454-2156.IntJSciRep20201267.