Araujo, Paulo Sergio Fagundes, Maria Cristiana da Silva Souto, Paulo Roberto Medeiros de Azevedo, e Maria de Fatima Freire de Melo Ximenes. 2016. “ NORTHEASTERN BRAZIL”. Gaia Scientia 10 (4). https://periodicos.ufpb.br/ojs/index.php/gaia/article/view/25823.