WHEELER, Fred P.; NEALE, Bill; KOWALSKI, Tadeusz; LETZA, Steve R. The efficiency of the Warsaw Stock Exchange : the first few years 1991-1996. Economics and Business Review, Poland, v. 2, n. 2, p. 37–58, 2002. DOI: 10.18559/ebr.2002.2.490. Disponível em: https://journals.ue.poznan.pl/ebr/article/view/490. Acesso em: 3 apr. 2025.