KOLEŚNIK, Jan. The Operational Activities of EU Banking Groups and the Portfolio of Government Bonds during the COVID-19 Pandemic – the Case of Non-euro Area EU Countries. Comparative Economic Research. Central and Eastern Europe, [S. l.], v. 28, n. 1, p. 133–152, 2025. DOI: 10.18778/1508-2008.28.08. Disponível em: https://czasopisma.uni.lodz.pl/CER/article/view/25239. Acesso em: 8 dec. 2025.