Odita, W. ., P. O. Okeke, and M. U. Iyioku. “GEOPHYSICAL STUDY OF ROAD FAILURES USING VERTICAL ELECTRICAL SOUNDING OF SOME ROADS IN ENUGU, ENUGU STATE, NIGERIA”. International Research Journal of Applied Sciences, Engineering and Technology, vol. 9, no. 3, Apr. 2023, pp. 21-39, https://cirdjournals.com/index.php/irjaset/article/view/1100.