Rodriguez, H.A.; Vaca, P.; Gonzalez, O.; de Mirabal, M.C. (1997). "Integrated Study of a Heavy Oil Reservoir in the Orinoco Belt: A Field Case Simulation". SPE Reservoir Simulation Symposium. doi:10.2118/38015-MS. INIST6242344.
Rodriguez, H.A.; Vaca, P.; Gonzalez, O.; de Mirabal, M.C. (1997). "Integrated Study of a Heavy Oil Reservoir in the Orinoco Belt: A Field Case Simulation". SPE Reservoir Simulation Symposium. doi:10.2118/38015-MS. INIST6242344.