ŻEBROWSKA‑SUCHODOLSKA, Dorota; PIEKUNKO‑MANTIUK, Iwona. Similarity and Granger Causality in Polish and Spanish Stock Market Sectors During the COVID–19 Pandemic. Comparative Economic Research. Central and Eastern Europe, Poland, v. 25, n. 3, p. 90–109, 2022. DOI: 10.18778/1508-2008.25.23. Disponível em: https://www.czasopisma.uni.lodz.pl/CER/article/view/14265. Acesso em: 8 aug. 2026.