RINGLER, Claudia. Increased economic efficiency through paying farmers to use less water. Ökologisches Wirtschaften - Fachzeitschrift, [S. l.], v. 22, n. 1, 2007. DOI: 10.14512/oew.v22i1.491. Disponível em: https://www.oekologisches-wirtschaften.de/index.php/oew/article/view/491. Acesso em: 18 juni. 2025.