ŻYLICZ, Tomasz. Economic value of nature. Journal of Public Governance, Poland, v. 39, n. 1, p. 114–124, 2018. DOI: 10.15678/ZP.2017.39.1.10. Disponível em: https://www.publicgovernance.pl/zpub/article/view/417.. Acesso em: 6 may. 2025.