POLIAK, M. POSSIBILITIES OF OPTIMALIZATION OF PUBLIC SOURCES SPENT ON TRANSPORT SERVICE. Perner’s Contacts, [S. l.], v. 6, n. 2, p. 106–115, 2011. Disponível em: https://pernerscontacts.upce.cz/index.php/perner/article/view/835. Acesso em: 20 kvě. 2024.