SZILVÁCSKU, Zsolt. System of landscape-level cooperation through the example of French natural parks. 4D Journal of Landscape Architecture and Garden Art, [S. l.], n. 57, p. 28–43, 2020. DOI: 10.36249/57.3. Disponível em: https://journal.uni-mate.hu/index.php/4D/article/view/4394. Acesso em: 5 dec. 2025.