@article{TMF_1989_81_2_a1,
     author = {V. A. Arzumanian and B. S. Nakhapetian and S. K. Pogosyan},
     title = {Asymptotic expansion of~the logarithm of~the partition function in~spin lattice systems that possess a~vacuum},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {175--184},
     publisher = {mathdoc},
     volume = {81},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1989_81_2_a1/}
}