%0 Journal Article %A M. M. Rahmatullaev %A M. A. Rasulova %T Periodic Ground States for the Potts Model with External Field and a Countable Set of Spin Values on the Cayley Tree %J Matematičeskie zametki %D 2022 %P 106-117 %V 112 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2022_112_1_a10/ %G ru %F MZM_2022_112_1_a10