Chabanyuk, Ya. M. 2006. “Asymptotic Normality of Fluctuations of the Procedure of Stochastic Approximation With Diffusive Perturbation in a Markov Medium”. Ukrains’kyi Matematychnyi Zhurnal 58 (12), 1686–1692. https://umj.imath.kiev.ua/index.php/umj/article/view/3564.