KUŁAK-KRZYSIAK, K. The costs of enforcement activities in administrative proceedings before administrative authority – unnamed tax?. The Opole Studies in Administration and Law, [S. l.], v. 18, n. 1, p. 75–90, 2020. DOI: 10.25167/osap.2165. Disponível em: https://czasopisma.uni.opole.pl/index.php/osap/article/view/2165. Acesso em: 29 sep. 2024.