Braga, E. S., C. B. Freitas, L. S. A. dos S. Mendes, and M. D. de Aquino. “Evaluation of the Quality of Groundwaters Located in the Coast, High Altitude and Hinterland of the State of Ceará for Human Consumption”. Águas Subterrâneas, vol. 32, no. 1, Dec. 2017, pp. 17-24, doi:10.14295/ras.v32i1.28969.