@article{NANO_2022_13_5_a1, author = {Mukhiddin I. Muminov and Tirkash A. Radjabov}, title = {On existence conditions for periodic solutions to a differential equation with constant argument}, journal = {Nanosistemy: fizika, himi\^a, matematika}, pages = {491--497}, publisher = {mathdoc}, volume = {13}, number = {5}, year = {2022}, language = {en}, url = {http://geodesic.mathdoc.fr/item/NANO_2022_13_5_a1/} }