ŚWIĄTEK, Władysław. Digitization of Administration in Poland on the Example of Services Rendered by the Social Insurance Institution (ZUS). Scientific Journal of Bielsko-Biala School of Finance and Law, Bielsko-Biała, PL, v. 26, n. 4, p. 131–140, 2022. DOI: 10.19192/wsfip.sj4.2022.21. Disponível em: https://asej.eu/index.php/asej/article/view/687. Acesso em: 29 mar. 2024.