MOHAMMED, R. F. The Mutual Effects Of The World Oil Prices And The Quantities Of The American Oil And Shale Gas Produced For The Period 2002 -2016. Academic Journal of Nawroz University, [S. l.], v. 6, n. 1, p. 260–275, 2017. DOI: 10.25007/ajnu.v6n1a29. Disponível em: https://journals.nawroz.edu.krd/index.php/ajnu/article/view/29. Acesso em: 23 jul. 2024.