W. A. Rabahy, J. C. D. da Silva, and M. D. Vassallo, “Determinants in the credits and debits of international travel account from the Brazilian Balance of Payments”, Rev. Tur. Anál., vol. 19, no. 2, pp. 293–306, Aug. 2008, doi: 10.11606/issn.1984-4867.v19i2p293-306.