KUKULSKI, Ziemowit; SĘK, Małgorzata (EDS.). Preface. In: Challenges of Contemporary Tax Law: Jubilee Book Dedicated to Professor Włodzimierz Nykiel. Volume II. Poland: Lodz University Press,2024. p. 9–10. DOI: 10.18778/8331-399-3.01. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1154/chapter/3148. Acesso em: 29 jan. 2026.