KRAWIEC, M. Testing the Granger causality for commodity mutual funds in Poland and commodity prices. Metody Ilościowe w Badaniach Ekonomicznych, [S. l.], v. 13, n. 2, p. 84–95, 2012. Disponível em: https://qme.sggw.edu.pl/article/view/3538. Acesso em: 14 maj. 2024.