GRUEHN, D. Economic Valuation of Urban Open Spaces and their Contribution to Life Quality in European Cities. Space – Society – Economy, [S. l.], n. 8, p. 59–66, 2008. DOI: 10.18778/1733-310.08.06. Disponível em: https://czasopisma.uni.lodz.pl/space/article/view/22196. Acesso em: 20 maj. 2024.