@article{DAN_1957_113_4_a14,
     author = {I. A. Kvasnikov},
     title = {On the variation principle applied to problems of a binary alloy and an {Ising's} system},
     journal = {Doklady Akademii Nauk},
     pages = {777--779},
     publisher = {mathdoc},
     volume = {113},
     number = {4},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_113_4_a14/}
}