Celestine N. Nwojiji, Anthony Chukwu, Stephen N. Ukpai, and Chibuike Akpa. “Petroleum System Elements Analysis of Sediment Outcrops in the Edda Area of the Afikpo Sub-Basin”. Global Journal of Geological Sciences, vol. 24, no. 2, Aug. 2026, pp. 181-02, https://www.ajol.info/index.php/gjgs/article/view/333166.