1Nelson,D.(1991).Conditional heteroskedasticity in asset returns:a new approach.Econometrica,59,347-370.
2Glosten,L.R.,R.Jagannathan,and D.E.Runkle.1993.On the relation between the expected value and the volatility of the normal excess return on stocks[J].Journal of Finance,48,1779-1801.
6Koutmos, G, 1992, "Asymmetric Volatility and Risk Return Tradeoff in Foreign Stock Markets", Journal of Multinational Financial Management, 2, 27-43.
7Koutmos, G, C Negakis, and P Theodossiou, 1993, "Stochastic Behaviour of the Athens Stock Exchange", Applied Financial Economics,3, 119-126.
8Nelson, D B, 1990,"Conditional Heteroskedasticity in Asset Return: A New Approach", Econometrica, 59, 347-370.
9Pagan, A R, and G W Schwert, 1990, "Alternative Models for Conditional Stock Volatility", Journal of Econometrics, 45, 267-290.
10Poon, Ser-Huang, and S J Taylor, 1992, "Stock Returns and Volatility: An Empirical Study of the U K Stock Market", Journal of Banking and Finance, 16, 37-59.
