FELTYNOWSKI, Marcin. Regional Products in the Central and Eastern European Countries that Acceded to the European Union in May 2004. Comparative Economic Research. Central and Eastern Europe, [S. l.], v. 16, n. 1, p. 21–38, 2013. DOI: 10.2478/cer-2013-0002. Disponível em: https://www.czasopisma.uni.lodz.pl/CER/article/view/6868. Acesso em: 8 dec. 2025.