摘要:Purpose – The aim of this study is to offer the current view on the subject, placing emphasis on studies that use Brazilian data and that could motivate new research. Design/methodology/approach –A bibliographic review of related studies and a secondary database. Findings – The contribution is to introduce this topic for the academic community in Brazil. We also present the main descriptive information for this market and its economic and policy implications. Originality/value – We contribute to the literature by summarizing the main works in the field, focusing on the Brazilian market, which has very detailed data and great potential for further studies.