M. J. S. da Silva, D. R. M. de Melo, D. Fernandes, E. S. Nunes Júnior, and R. A. da Silva, “PHYSIO-CHEMICAL EVALUATION AND MICROBIOLOGICAL OF THE UNDERGROUND WATER IN TWO COMMUNITIES OF CATOLÉ DO ROCHA-PB”, Green Journal, vol. 4, no. 4, pp. 115–121, Nov. 2009.