Starting in 1996,Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to theWayback Machine after an embargo period.
David H. Bailey, Paul N. Swarztrauber SIAM Review, Vol. 33, No.3.(Sep., 1991), pp. 389-404, Jstor. (Checkbiblist here)
Haldun M.Ozaktas, Zeev Zalevsky and M. Alper Kutay. "The Fractional FourierTransformwith Applications in Optics and Signal Processing". John Wiley &Sons,2001. Series in Pure and Applied Optics. xviii + 513 pages, hardcover,ISBN0471 96346 1 (book web)(amazon)