CASSIN, M.; ZOLIN, M. Productive needs and demand for protection: the complex issue of vulnerable areas. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, [S. l.], v. 1, p. 26–33, 2007. DOI: 10.22630/PRS.2007.1.3. Disponível em: https://prs.sggw.edu.pl/article/view/6046. Acesso em: 18 paź. 2024.