@article{TMF_1975_24_1_a14,
     author = {Yu. K. Tovbin and V. K. Fedyanin},
     title = {Decoupling of correlations in the ising model. {Flat} hexagonal lattice},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {129--132},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1975_24_1_a14/}
}