Monteiro, Helena Telino, and Yanko Marcius de Alencar Xavier. “Petrobras Bidding Decree in Light of the Constitutional Principle of Efficiency: A Contribution from the Economic Analysis of Law”. Digital Journal Constitution and Guarantee of Rights, vol. 3, no. 01, Oct. 2013, https://www.periodicos.ufrn.br/constituicaoegarantiadedireitos/article/view/4327.