1. Bensoussans, A., Lions, J. L., Papanicolaou, G.: Asymptotic analysis for periodic structures. Amsterdam: North Holland Publishing Company 1978
2. Billingsley, P.: Convergence of probability measures. New York: J. Wiley & Sons 1968
3. Breiman, L.: Probability. Reading: Addison Wesley 1968
4. Chung, K. L.: Markov chains with stationary transition probabilities. Berlin: Springer 1960
5. Donsker, M.: An invariance principle for certain probability limit theorems. Mem. Am. Math. Soc.6, 1951