O. Oluwajana, A. Ogunyele, J. Egunjobi, and A. Ajayi, “Subsurface mapping and geochemical investigation of a marble deposit around Igarra, Southwestern Nigeria”, IJAG, vol. 6, no. 2, pp. 209–213, Aug. 2018, doi: 10.14419/ijag.v6i2.13475.