GRACZYK, Alicja Małgorzata. Sustainable development in the city of Heidelberg. Acta Universitatis Lodziensis. Folia Oeconomica, [S. l.], v. 2, n. 313, 2016. DOI: 10.18778/0208-6018.313.14. Disponível em: https://czasopisma.uni.lodz.pl/foe/article/view/505. Acesso em: 5 dec. 2025.