Traversa, E. New Own Resources for the EU Budget: Good Old Taxes Could Also Do the Job. W Challenges of Contemporary Tax Law: Jubilee Book Dedicated to Professor Włodzimierz Nykiel. Volume II; Kukulski, Z., Sęk, M., Red.; Wydawnictwo Uniwersytetu Łódzkiego: Poland, 2024; s. 303-309. https://doi.org/10.18778/8331-399-3.24.