Safonova , O.A. (1992) “Asymptotical behaviour of integral functionals from diffusion processes with periodical coefficients”, Ukrains’kyi Matematychnyi Zhurnal, 44(2), pp. 245–252. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/7838 (Accessed: 6 December 2025).