2 citations to https://www.mathnet.ru/eng/ps207

1. Sergej V. Znamenskij, “A formula for the mean length of the longest common subsequence”, Zhurn. SFU. Ser. Matem. i fiz., 10:1 (2017), 71–74    
2. S. V. Znamenskii, “Priblizhenie dliny naibolshei obschei podposledovatelnosti pary sluchainykh strok”, Programmnye sistemy: teoriya i prilozheniya, 7:4 (2016), 347–358