« PALYNOZONATION AND PALEO DEPOSITIONAL ENVIRONMENT OF EOCENE-OLIGOCENE SEDIMENTS OF NORTHWESTERN NIGER DELTA BASIN IN NIGERIA ». FULafia Journal of Science and Technology , vol. 6, nᵒ 2, décembre 2020, p. 11-19, https://lafiascijournals.org.ng/index.php/fjst/article/view/140.