BOROWSKI, Krzysztof. Analysis of monthly rates of return in April on the example of selected world stock exchange indices. Equilibrium. Quarterly Journal of Economics and Economic Policy, [S. l.], v. 11, n. 2, p. 307–325, 2016. DOI: 10.12775/EQUIL.2016.014. Disponível em: https://journals.economic-research.pl/eq/article/view/138. Acesso em: 3 mar. 2024.