1. Alexander's Gas and Oil Connections. 2008. ‘Oil Finds prompt Brazil to Consider Changing Rules’.Company News, 13(9) May 5
2. Brandão, F. 1998. “‘The Petrobras Monopoly and the Regulation of Oil Prices in Brazil’”. Oxford Institute for Energy Studies.
3. Business Latin America. 2007. “‘Bolivia-Brazil: High Stakes Haggling’”. 5