@article{DAN_1975_221_5_a15,
     author = {I. I. Ol'khovskii},
     title = {The first approximation of the {\textquotedblleft}temperature{\textquotedblright} expansion of the {Bogoljubov} {\textquotedblleft}chain{\textquotedblright}},
     journal = {Doklady Akademii Nauk},
     pages = {1063--1065},
     year = {1975},
     volume = {221},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_221_5_a15/}
}