Voerkelius, Susanne, Gerold Heinrichs, Margarita M. López Gil, y Ligia Alves dos Santos Semrau. «INVESTIGATIONS WATER MANAGEMENT AND WATER QUALITY IN PICOS/ PIAUÍ AND TAUÁ /CEARÁ WITHIN THE BILATERAL WAVES PROGRAM IN NORTHEAST BRAZIL». Águas Subterrâneas (septiembre 11, 2000). Accedido julio 22, 2024. https://aguassubterraneas.abas.org/asubterraneas/article/view/24306.