KUKULSKI, Ziemowit. Elimination of Double Taxation of Fees for Technical Services in Bilateral Tax Treaties Concluded by Poland. Analizy i Studia CASP, [S. l.], v. 18, n. 2, p. 9–17, 2024. Disponível em: https://econjournals.sgh.waw.pl/ASCASP/article/view/4747. Acesso em: 10 sty. 2025.