FRASER, I.; RUSSELL, N. The Economics of UK Agri-Environmental Policy: Present and Future Developments. Economic Issues, [S. l.], v. 2, n. 1, p. 67–84, 1997. Disponível em: https://mail.economicissues.org.uk/index.php/EI_OJS/article/view/25. Acesso em: 11 nov. 2026.