The real Brazilian tributary system presents a series of problems and despite everybody knows that a changing is necessary, it was not yet done. A lot of efforts is realized trying to evaluate the impacts of different proposals of tributary system alteration but their results are not persuasive...

This work studies the gasoline market in Brazil with emphasis given to the State of São Paulo. Our first line of research investigates whether this market presents features which favor anti-competitive actions, despite being a market with several agents involved. Our empirical analysis makes...