Testovi ranga . Ekonomski signali: poslovni magazin, [S. l.], v. 12, n. 2, p. 53–61, 2017. DOI: 10.5937/ekonsig1702053T. Disponível em: https://esignali.edu.rs/index.php/es/article/view/110.. Acesso em: 30 jun. 2026.