By Stewart, Ian, Barnsley, Prof. Michael, Lesmoir-Gordon, Nigel, Mandelbrot, Benoit B., Flake, Dr. Gary, Prechter, Robert R., Clarke, Arthur C.
By Peitgen, Heinz-Otto, Saupe, Dietmar, Fisher, Yuval, McGuire, Michael, Voss, Richard F., Barnsley, Michael F., Devaney, Robert L., Mandelbrot, Benoit B.
By Castle, Richard, Barnsley, D. G.
By Barnsley, Prof. Michael