Pissarra TCT, Costa RCA, Caldas AM, Rodrigues FM, Fernandes LFS, Pacheco FAL. Methodological proposal for Payments for Environmental Services (PES) aiming to produce clean water in springs. CeN [Internet]. 2022 Apr. 20 [cited 2024 Apr. 19];44:e23. Available from: https://periodicos.ufsm.br/cienciaenatura/article/view/69453