1. Hypercyclic and cyclic vectors;Ansari;J. Funct. Anal.,1995
2. E. Abakumov, J. Gordon, Common hypercyclic vectors for multiples of backward shift, J. Funct. Anal., to appear.
3. Démonstration d'un théorèm élèmentaire sur les fonctions entièrs;Birkhoff;C.R. Acad. Sci. Paris,1929
4. R. Ellis, Lectures on Topological Dynamics, W.A. Benjamin, Inc., New York, 1969, xv+211pp.
5. D. Gaier, Lectures on Complex Approximation, translated from the German by Renate McLaughlin, Birkhäuser, Boston, Inc., Boston, MA, 1987, xvi+196pp. ISBN: 0-8176-3147-X.