Tonin, Julyerme Matheus; Barczsz, Silvio Silvestre - 2008
external market. The data was period of July, 1994 to December, 2007. The theory that bases the work is the Law of the Only … co-integration. The test of Granger suggests that there is bi-directional relationship among the price series analyzed …, it was also observed the existence of a relationship of long term between variables, it was also verified through the co-integration …