Autores: 

E.G. Pereira, O.S. Kirillova, D. Moin, S.F.Ojagh, W.A. Clavijo Vitto, J.V.M. Cardoso, F. Delgado de Jesus, S.G. Balliram, E. Charles, C. Valdés Aguirre, and T. Affonso.
International Sanctions on Petroleum Producing  Countries vis-á-vis Private Investments: A Comparison  Between Iran, Russia, and Venezuela