VALÁNSZKI, István; SALLAY, Ágnes. A landscape indicator-system for sustainable landscape management. 4D Journal of Landscape Architecture and Garden Art, [S. l.], n. 46, p. 44–51, 2017. Disponível em: https://journal.uni-mate.hu/index.php/4D/article/view/6101. Acesso em: 14 dec. 2025.