1. Doob, J.L.: Stochastic Processes. Wiley/Chapman & Hall, New York (1953). Russian transl.: IL, Moscow (1956)
2. Dorogovtsev, A.Ya.: Some remarks on differential equations perturbed by periodic random processes. Ukrain. Mat. Zh. 14(2), 119–128 (1962). English transl.: In: Selected Transl. Math. Statist. and Probability, vol. 5, pp. 259–269. Am. Math. Soc, Providence (1965)
3. Gikhman, I.I., Skorokhod, A.V.: Introduction to the Theory of Random Processes. Nauka, Moscow (1965). English transl.: Saunders, Philadelphia (1969)
4. Ibragimov, I.A., Linnik, Yu.V.: Independent and Stationarily Connected Variables. Nauka, Moscow, (1965). English transl.: Groningen, Noordhoff ({1971})
5. Itô, K., Nisio, M.: On stationary solutions of a stochastic differential equation. J. Math. Kyoto Univ. 4, 1–75 (1964)