FRISCH, Hans. THE GUARANI AQUIFER PROJECT - DETERMINATION OF GROUNDWATER RECHARGE AND DEVELOPMENT OF GROUNDWATERAND DRINKINGWATER PROTECTION. Águas Subterrâneas, [S. l.], 2000. Disponível em: https://aguassubterraneas.emnuvens.com.br/asubterraneas/article/view/24008. Acesso em: 7 fev. 2025.