Daniel Eshimiakhe, et al. “Two-Dimensional Image of Seismic Refraction Tomography and Electrical Resistivity Tomography Survey in a Geophysical Proposed Test Site at Shika, Ahmadu Bello University Nigeria”. Global Journal of Science Frontier Research, vol. 19, no. H2, May 2019, pp. 43-50, https://journalofscience.org/index.php/GJSFR/article/view/2490.