McMillan, David G.; Thupayagale, Pako - In: Studies in Economics and Finance 26 (2009) October, pp. 275-292
Purpose – In order to assess the informational efficiency of African equity markets (AEMs), the purpose of this paper is to examine long memory in both equity returns and volatility using auto-regressive fractionally integrated moving average (ARFIMA)-FIGARCH/hyperbolic GARCH (HYGARCH) models....