@article{TMF_2021_209_2_a8,
     author = {G. I. Botirov and U. U. Qayumov},
     title = {Ground states for {the~Potts} model with competing interactions and a~countable set of spin values on {a~Cayley} tree},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {367--377},
     year = {2021},
     volume = {209},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2021_209_2_a8/}
}