1. V.M. Alekseev, Symbolic Dynamics, Naukova Dumka, Kiev, 1986. The 11th Mathematical School
2. On the convergence of infinite products of matrices;Artzrouni;Linear Algebra and its Applications,1986
3. Fractals Everywhere;Barnsley,1988
4. A better way to compress images;Barnsley;BYTE,1988
5. Infinite products and paracontracting matrices;Beyn;The Electronic Journal of Linear Algebra,1997