Tabosa, Francisco José Silva, Guilherme Irffi, and Daniel Barboza Guimaraes. 2014. “Income and Inequality Elasticities of Poverty of Northeastern States of Brazil: An Analysis of the Period of 1981 to 2009”. Revista de Política Agrícola 23 (1): 65-76. https://rpa.sede.embrapa.br/RPA/article/view/886.