Silva, R. L. M. da, Nardi, P. C. C. and Pimenta Junior, T. (2012) “The impact of the migration of businesses to the differentiated levels of BM&F Bovespa’s corporate governance over the and return of its shares”, Revista de Administração da UFSM, 5(2), pp. 222–242. doi: 10.5902/198346592599.