DE KOCK, M. O.; BEUKES, N. J.; ADENIYI, E. O.; COLE, D.; GÖTZ, A. E.; GEEL, C.; OSSA, F.-G. Deflating the shale gas potential of South Africa’s Main Karoo basin. South African Journal of Science, [S. l.], v. 113, n. 9/10, p. 12, 2017. DOI: 10.17159/sajs.2017/20160331. Disponível em: https://sajs.co.za/article/view/4125. Acesso em: 26 feb. 2024.