ROGALSKI, M. Communications interception and obtaining telecommunications billings by authorised entities within their operational and intelligence activities in Poland. Ius Novum, Warszawa, Poland, v. 10, n. 2, p. 126-141, 2016. Disponível em: https://iusnovum.lazarski.pl/iusnovum/article/view/1136. Acesso em: 8 grudz. 2021.