« GEOCHEMICAL PROXIES FROM CLAYS IN PARTS OF NORTHERN NIGER DELTA: IMPLICATION FOR UNRAVELLING PALEOWEATHERING AND PALEO-REDOX CONDITIONS ». FULafia Journal of Science and Technology , vol. 6, nᵒ 1, mars 2020, p. 6-14, https://lafiascijournals.org.ng/index.php/fjst/article/view/161.