UGOCHUKWU, A. E. .; MINAPUYE, I. O. .; GEOFFREY CHIJIOKE, S.-O. . Late Eocene to Early Miocene Biostragraphy and Palaeoenvironments in the Beta Field of the Northern-Central Niger Delta, Nigeria. American Scientific Research Journal for Engineering, Technology, and Sciences, [S. l.], v. 62, n. 1, p. 145–171, 2019. Disponível em: https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4531. Acesso em: 7 may. 2024.