BRZEZIŃSKI , Bogumił; NOWAK, Ireneusz. “Behavioural letters” and the question of the legal basis of the National Revenue Administrationʼs operation. Studia Prawno-Ekonomiczne, [S. l.], v. 131, p. 29–55, 2024. DOI: 10.26485/SPE/2024/131/2. Disponível em: https://journals.ltn.lodz.pl/Studia-Prawno-Ekonomiczne/article/view/2408. Acesso em: 27 jul. 2024.