Lang, Michael. „Interpretation of Double Taxation Conventions – The Judgement of the German Federal Fiscal Court (Bundesfinanzhof) in the Light Designer Case”. Challenges of Contemporary Tax Law: Jubilee Book Dedicated to Professor Włodzimierz Nykiel. Volume II, zredagowane przez Ziemowit Kukulski i Małgorzata Sęk, Wydawnictwo Uniwersytetu Łódzkiego, 2024, s. 191-05, https://doi.org/10.18778/8331-399-3.16.