E. Epuh, D. O. Olorode, P. C. Nwilo, and C. U. . Ezeigbo, “Petrophysical Characterization of Gongola Basin (Kolmani River1) Shaly-Sand Reservoir Using Dual Water Model”, 5003, vol. 2, no. 4, pp. 170–181, Apr. 2012.