Akingboye, A. S., and A. C. Ogunyele. “Insight into Seismic Refraction and Electrical Resistivity Tomography Techniques in Subsurface Investigations”. Rudarsko-geološko-Naftni Zbornik, vol. 34, no. 1, Oct. 2018, doi:10.17794/rgn.2019.1.9.