ANAND KUMAR SINGH AND DR. MANISH VARSHNEY. An analysis of oil and gas sector of india. International journal of economic perspectives, [S. l.], v. 12, n. 1, p. 99–106, 2018. Disponível em: http://www.ijeponline.org/index.php/journal/article/view/252. Acesso em: 15 apr. 2026.