%0 Journal Article %A Mukhiddin I. Muminov %A Tirkash A. Radjabov %T On existence conditions for periodic solutions to a differential equation with constant argument %J Nanosistemy: fizika, himiâ, matematika %D 2022 %P 491-497 %V 13 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/NANO_2022_13_5_a1/ %G en %F NANO_2022_13_5_a1