Dias R, Teixeira N, Machova V, Pardal P, Horak J, Vochozka M. Random walks and market efficiency tests: evidence on US, Chinese and European capital markets within the context of the global Covid-19 pandemic. oc [Internet]. 2020 Dec. 30 [cited 2024 May 2];11(4):585-608. Available from: https://journals.economic-research.pl/oc/article/view/1845