CORREA RESTREPO, Francisco Javier. Economic valuation of ecosystems associated strategic water sources that supply aqueducts. Semestre Económico, [S. l.], v. 8, n. 16, p. 29–48, 2005. Disponível em: https://revistas.udem.edu.co/index.php/economico/article/view/1097. Acesso em: 9 may. 2026.