SIŁKA, P. Innovation potential of Polish cities. Studies of the Industrial Geography Commission of the Polish Geographical Society, [S. l.], v. 15, p. 185–196, 2010. DOI: 10.24917/20801653.15.16. Disponível em: https://prace-kgp.uken.krakow.pl/article/view/413. Acesso em: 5 may. 2024.