1. Wasan, M.T.: Stochastic approximation, Cambridge Univ. Press, 1969.
2. Nevel’son, M.B. and Khas’minskiĭ, R.Z.: Stochastic approximation and recursive estimation, Amer. Math. Soc, 1976 (translated from the Russian).
3. Tsypkin, Ya.Z.: Adaption and learning in automatic systems, Acad. Press, 1973 (translated from the Russian).
4. Tsypkin, Ya.Z.: Foundations of the theory of learning systems, Acad. Press, 1973 (translated from the Russian).
5. Kushner, H.J. and Clark, D.S.: Stochastic approximation methods for constrained and unconstrained systems, Springer, 1978.