1. Dienes, P.: The Taylor Series. New York: Dover, 1957
2. Markushevich, A.I.: Theory of Functions of a Complex Variable. Englewood Cliffs, N.J.: Prentice-Hall, 1967
3. Nienhuys, J.W., Thiemann, J.G.F.: On the existence of entire functions mapping countable dense sets onto each other. Proc. Dutch Acad. Sci. Ser A,79, 331?334 (1976)