1Cootner P H. The random character of stock market prices.MIT Press,Cambridge MA, 1964.
2Fama. Efficient capital markets:a review of theory and empirical work.Journal of Business, 25(1970).
3Imad A.Moosa, Param Silvapulle. The price-volume relationship in the crude oil futures market:some results based on linear and nonlinear causality testing.International Review of Economics and Finance,9(2000):11-30.
4Hamilton,J D.A new approach to the economic analysis of non-stationary time series and business cycle. Econometrics, 57 (1989):357-384.
5Fong, W.M., See, K.H.A markov switching model of the conditional volatility of crude oil futures prices.Energy Economics, 24 (2002):71-95.
6Cortazar, G., Schwartz, E.S.Implementing a stochastic model for oil futures prices.Energy Economics, 25 (2003).