BERNAT, Rafał. Outsourcing of Internet Services – Tax Aspects. Journal of Finance and Financial Law, [S. l.], v. 2, n. 3, p. 17–29, 2015. DOI: 10.18778/2391-6478.2.3.03. Disponível em: https://www.czasopisma.uni.lodz.pl/fipf/article/view/9692. Acesso em: 15 feb. 2026.