1. L. Bachelier, in The Random Character of Stock Prices, edited by H.P. Cooper (Cambridge, 1964)
2. P. Cootner, The random character of stock prices (MIT Press, Cambridge, MA, 1964)
3. R.F. Engle, Econometrica 50, 987 (1982)
4. Z. Ding, C.W.J. Granger, R.F. Engle, J. Empir. Finance 1, 83 (1993)
5. F.J. Breidt, N. Crato, P.J.F. de Lima, Working paper (Johns Hopkins University, 1993)