@article{TMF_1975_23_2_a12,
     author = {A. A. Kazakov},
     title = {Perturbation theory for the {Green's} functions of the {Heisenberg} model with single-ion anisotropy},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {281--288},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1975_23_2_a12/}
}