V. S. Barbosa, R. M. Loyo, R. J. de P. S. e Guimarães, and C. S. Barbosa, “The Geographic Information System applied to study schistosomiasis in Pernambuco”, Rev. saúde pública, vol. 51, p. 107, Nov. 2017, doi: 10.11606/S1518-8787.2017051000069.