GUPTA, S.; SHARMA, R. K. Pricing and Taxation in Oil and Gas Sector: A study with special reference to ONGC. Journal of Global Economy, [S. l.], v. 8, n. 3, p. 233–260, 2012. DOI: 10.1956/jge.v8i3.220. Disponível em: http://www.rcssindia.org/jge/index.php/jge/article/view/220. Acesso em: 30 jun. 2022.