B. K. Pires Gaspar, F. Rocha Pinto, D. Barbosa de Alencar, and G. de Freitas Lopes, “Degrees of Risk of Environmental Impacts Arising from Irregular Occupations in the Northern Zone of Manaus - Amazonas”, Int J Innov Educ Res, vol. 7, no. 11, pp. 331–346, Nov. 2019, doi: 10.31686/ijier.vol7.iss11.1887.