@article{DAN_1978_241_4_a1,
     author = {B. M. Gurevich},
     title = {A variational principle for one-dimensional lattice {Gibbs} random fields with a countable number of states},
     journal = {Doklady Akademii Nauk},
     pages = {749--752},
     publisher = {mathdoc},
     volume = {241},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_241_4_a1/}
}