@article{TMF_1981_46_1_a12,
     author = {V. M. Zharkov},
     title = {Perturbation theory and the exchange interaction in the one-dimensional {Hubbard} model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {132--138},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1981_46_1_a12/}
}