LANG, Michael. Interpretation of Double Taxation Conventions – The Judgement of the German Federal Fiscal Court (Bundesfinanzhof) in the Light Designer Case. W: KUKULSKI, Ziemowit; SĘK, Małgorzata (red.). Challenges of Contemporary Tax Law: Jubilee Book Dedicated to Professor Włodzimierz Nykiel. Volume II. Poland: Wydawnictwo Uniwersytetu Łódzkiego,2024. p. 191–205. DOI: 10.18778/8331-399-3.16. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1154/chapter/3163. Acesso em: 15 luty. 2026.