ŠVADLENKA, L.; SALAVA, D. SOURCES AND MECHANISMS OF UNIVERSAL POSTAL SERVICE FUNDING. Perner’s Contacts, [S. l.], v. 8, n. 2, p. 130–136, 2013. Disponível em: https://pernerscontacts.upce.cz/index.php/perner/article/view/739. Acesso em: 6 kvě. 2024.