Niewiadomski M, Niemczyk A, Gródek-Szostak Z, Strojny J. The path to Industry 4.0: The evolution of industry in the national economies of the European Union in 2009-2020. IER [Internet]. 2023 Sep. 30 [cited 2024 Nov. 21];9(3):75-89. Available from: https://ier.uek.krakow.pl/index.php/pm/article/view/2161