ŁĘT, Blanka. Granger Causality in Risk Analysis whithin Selected Warsaw Stock Exchange Sectors. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 1, n. 9, p. s. 77–86, 2013. DOI: 10.18559/v7tjzb75. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3260. Acesso em: 3 sep. 2026.