CUPIAŁ, B.; SOBOLEWSKA-PONIEDZIAŁEK, E. Concept of a regional silver economy illustrated with the example of Lubusz province. Managerial Economics, [S. l.], v. 15, n. 1, p. 19, 2014. DOI: 10.7494/manage.2014.15.1.19. Disponível em: https://journals.agh.edu.pl/manage/article/view/1162. Acesso em: 4 may. 2024.