Diviš, Karel; Teplý, Petr - In: Czech Journal of Economics and Finance (Finance a uver) 55 (2005) 9-10, pp. 471-482
The authors use a variance ratio test to test the weak form of market efficiency as regards capital markets in the Czech Republic, Slovakia, Hungary, Poland, and in the United States. Market efficiency was tested using weekly and monthly values of relevant market indices in a period from 1993...