Barcz, Jan. “The Planned Expansion of the ‘30+ Union’ and the Allocation of Seats in the European Parliament”. Roczniki Nauk Społecznych 52, no. 4 (November 21, 2024): 47–62. Accessed November 21, 2025. https://czasopisma.tnkul.pl/index.php/rns/article/view/1349.