Maranhão, Rebecca Lima Albuquerque, and José Eustáquio Ribeiro Vieira Filho. “Rural Social Pension Insurance, Special Insured and Assistencialism”. Revista de Política Agrícola, vol. 27, no. 4, June 2019, p. 134, https://rpa.sede.embrapa.br/RPA/article/view/1468.