PIETRZAK, M.; ROMAN, M. THE PROBLEM OF GEOGRAPHICAL DELIMITATION OF AGRI-FOOD MARKETS: EVIDENCE FROM THE BUTTER MARKET IN EUROPEAN UNION. Acta Scientiarum Polonorum. Oeconomia, [S. l.], v. 17, n. 3, p. 85–95, 2018. DOI: 10.22630/ASPE.2018.17.3.40. Disponível em: https://aspe.sggw.edu.pl/article/view/257. Acesso em: 5 may. 2024.