A. de S. Silva and G. B. de Souza, “CHARACTERIZATION GEO-ENVIRONMENTAL OF DISTRICT OF BONFIM DE FEIRA, FEIRA DE SANTANA, BAHIA, BRAZIL”, Atelie Geogr., vol. 3, no. 3, pp. 53–73, Jan. 2010, doi: 10.5216/ag.v3i3.8584.