T. Choudhry, INTEGRATED-GARCH AND NONSTATIONARY VARIANCES - EVIDENCE FROM EUROPEANSTOCK MARKETS DURING THE 1920S AND 1930S, Economics letters, 48(1), 1995, pp. 55-59
This paper provides a study of the persistence of stock return volatil
ity in five European markets during the 1920s and 1930s. The empirical
investigation is conducted using the Integrated-GARCH model. Results
show that for the bulk of the series shocks to volatility are permanen
t, implying a significant impact of volatility on stock prices.