Artigo
[PDF] full report: "Beyond the Rhetoric - Measuring revenue transparency - Company performance in the oil and gas industries"
[report ranks performance of 25 companies: Amerada Hess, BP, Chevron Texaco, CNPC, Conoco Phillips, Devon Energy, Eni, Exxon Mobil, Lion Energy, Lukoil, Nexen, Norsk Hydro, Paladin Resources, PetroChina, Petronas, Premier Oil, Repsol YPF, Santos, Shell, Statoil, Talisman, Total, Transatlantic, Unocal, Woodside Petroleum]