1Mandelbrot, B., 1963. "The Variation of Certain Speculative Prices."Joumal of Busing, s, Vol. 36, pp. 394 - 419.
2Mandelort, B. and Taqqu, M., 1979. "Robust R/S Analysis of Long Run Serial Correlation." Bulletin of the International Statistical Institute, 48(Book 2),pp.59 - 104.
3Fama, E., 1965. "The Behavior of Stock Market Prices. " Joumal of Business, 38, pp. 34 - 105.
4Engle, R., 1982. "Autoregressire Conditional Heteroskedasticity with Estinates of the Variance of UK Inflation. " Econometrica, 50, pp. 987-1008.