2 citations to https://www.mathnet.ru/eng/semr1240

1. V. G. Mikhailov, N. M. Mezhennaya, A. V. Volgin, “On the asymptotic normality conditions for the number of repetitions in a stationary random sequence”, Discrete Math. Appl., 32:6 (2022), 391–401        
2. N. M. Mezhennaya, V. G. Mikhailov, “Tsentralnaya predelnaya teorema dlya $U$-statistik ot tsepochek metok vershin na polnom grafe”, PDM. Prilozhenie, 2021, no. 14, 30–32