for symbolic Bernoulli schemes was given by Michael S. Keane and M. Smorodinsky in 1979. References Further reading Steven Kalikow, Randall McCutcheon (2010) Outline of Ergodic Theory, Cambridge University Press Donald Ornstein (2008), "Ornstein theory" Scholarpedia, 3(3):3957. Daniel J. Rudolph (1990) Fundamentals of measurable dynamics: Ergodic theory on Lebesgue spaces, Oxford Science Publications. The Clarendon Press, Oxford University Press, New York, 1990. Ergodic theory Symbolic dynamics