%0 Journal Article %A D. A. Tvyordyj %A R. I. Parovik %T Fractional differential model of physical processes with saturation and its application to the description of the dynamics of COVID-19 %J Vestnik KRAUNC. Fiziko-matematičeskie nauki %D 2022 %P 119-136 %V 40 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VKAM_2022_40_3_a10/ %G ru %F VKAM_2022_40_3_a10