(1)
Giannotti, J. D. G.; Souza, T. M. M. de. Division of States of Brazil in Homogeneous Groups Used to Statistics Data the Tourist Industry and Gross Domestic Product. Rev. Tur. AnĂ¡l. 2009, 20 (1), 25-34. https://doi.org/10.11606/issn.1984-4867.v20i1p25-34.