Souchaud, S., and R. Baeninger. “Collas and Cambas from the Other Side of the Border: Factors of the Unusual Distribution of Bolivian Immigration in Corumbá, State of Mato Grosso Do Sul, Brazil”. Brazilian Journal of Population Studies, vol. 25, no. 2, Dec. 2008, pp. 271-86, https://rebep.org.br/revista/article/view/159.