%0 Journal Article %A E. P. Emelyanova %A A. O. Selskii %T Marking stages of REM and non-REM sleep using recurrent analysis %J Izvestiya VUZ. Applied Nonlinear Dynamics %D 2023 %P 643-649 %V 31 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVP_2023_31_5_a9/ %G ru %F IVP_2023_31_5_a9