MILETIĆ, Ruža; GAŠPERT, Milica; BOŠNJAK, Ivan. Concept of Postal Traffic Quality Control Using the P Card. Promet - Traffic&Transportation, [S. l.], v. 12, n. 3, p. 133–140, 2012. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/1909. Acesso em: 26 aug. 2025.